diff --git a/mezzanine/blog/__init__.py b/mezzanine/blog/__init__.py
index 03fc4334ee..0822bd8f66 100644
--- a/mezzanine/blog/__init__.py
+++ b/mezzanine/blog/__init__.py
@@ -5,3 +5,12 @@
 from __future__ import unicode_literals
 
 from mezzanine import __version__  # noqa
+from mezzanine.utils.models import get_swappable_model
+
+
+def get_post_model():
+    return get_swappable_model("BLOG_POST_MODEL")
+
+
+def get_category_model():
+    return get_swappable_model("BLOG_CATEGORY_MODEL")
diff --git a/mezzanine/blog/feeds.py b/mezzanine/blog/feeds.py
index 85f3408f50..097f1c73fc 100644
--- a/mezzanine/blog/feeds.py
+++ b/mezzanine/blog/feeds.py
@@ -8,16 +8,19 @@
 from django.utils.feedgenerator import Atom1Feed
 from django.utils.html import strip_tags
 
-from mezzanine.blog.models import BlogPost, BlogCategory
+from mezzanine.blog import get_post_model, get_category_model
 from mezzanine.conf import settings
 from mezzanine.core.templatetags.mezzanine_tags import richtext_filters
 from mezzanine.core.request import current_request
 from mezzanine.generic.models import Keyword
+from mezzanine.utils.apps import pages_installed
 from mezzanine.utils.html import absolute_urls
 from mezzanine.utils.sites import current_site_id
 
 
 User = get_user_model()
+BlogPost = get_post_model()
+BlogCategory = get_category_model()
 
 try:
     unicode
@@ -43,8 +46,9 @@ def __init__(self, *args, **kwargs):
         super(PostsRSS, self).__init__(*args, **kwargs)
         self._public = True
         page = None
-        if "mezzanine.pages" in settings.INSTALLED_APPS:
-            from mezzanine.pages.models import Page
+        if pages_installed():
+            from mezzanine.pages import get_page_model
+            Page = get_page_model()
             try:
                 page = Page.objects.published().get(slug=settings.BLOG_SLUG)
             except Page.DoesNotExist:
diff --git a/mezzanine/blog/forms.py b/mezzanine/blog/forms.py
index 1db7c638d9..3406231222 100644
--- a/mezzanine/blog/forms.py
+++ b/mezzanine/blog/forms.py
@@ -2,10 +2,12 @@
 
 from django import forms
 
-from mezzanine.blog.models import BlogPost
+from mezzanine.blog import get_post_model
 from mezzanine.core.models import CONTENT_STATUS_DRAFT
 
 
+BlogPost = get_post_model()
+
 # These fields need to be in the form, hidden, with default values,
 # since it posts to the blog post admin, which includes these fields
 # and will use empty values instead of the model defaults, without
diff --git a/mezzanine/blog/management/base.py b/mezzanine/blog/management/base.py
index b88278b4ac..f7871e3378 100644
--- a/mezzanine/blog/management/base.py
+++ b/mezzanine/blog/management/base.py
@@ -12,15 +12,18 @@
 from django.utils.encoding import force_text
 from django.utils.html import strip_tags
 
-from mezzanine.blog.models import BlogPost, BlogCategory
+from mezzanine.blog import get_post_model, get_category_model
 from mezzanine.conf import settings
 from mezzanine.core.models import CONTENT_STATUS_DRAFT
 from mezzanine.core.models import CONTENT_STATUS_PUBLISHED
 from mezzanine.generic.models import Keyword, ThreadedComment
-from mezzanine.pages.models import RichTextPage
+from mezzanine.pages import get_rich_text_page_model
 from mezzanine.utils.html import decode_entities
 
 User = get_user_model()
+BlogPost = get_post_model()
+BlogCategory = get_category_model()
+RichTextPage = get_rich_text_page_model()
 
 
 class BaseImporterCommand(BaseCommand):
diff --git a/mezzanine/blog/migrations/0001_initial.py b/mezzanine/blog/migrations/0001_initial.py
index 045c98b9f1..49c0de0f70 100644
--- a/mezzanine/blog/migrations/0001_initial.py
+++ b/mezzanine/blog/migrations/0001_initial.py
@@ -24,6 +24,7 @@ class Migration(migrations.Migration):
                 ('site', models.ForeignKey(editable=False, to='sites.Site', on_delete=models.CASCADE)),
             ],
             options={
+                'swappable': 'BLOG_CATEGORY_MODEL',
                 'ordering': ('title',),
                 'verbose_name': 'Blog Category',
                 'verbose_name_plural': 'Blog Categories',
@@ -60,6 +61,7 @@ class Migration(migrations.Migration):
                 ('user', models.ForeignKey(related_name='blogposts', verbose_name='Author', to=settings.AUTH_USER_MODEL, on_delete=models.CASCADE)),
             ],
             options={
+                'swappable': 'BLOG_POST_MODEL',
                 'ordering': ('-publish_date',),
                 'verbose_name': 'Blog post',
                 'verbose_name_plural': 'Blog posts',
diff --git a/mezzanine/blog/models.py b/mezzanine/blog/models.py
index 0c3fbd8115..2892968fa6 100644
--- a/mezzanine/blog/models.py
+++ b/mezzanine/blog/models.py
@@ -12,12 +12,12 @@
 from mezzanine.utils.models import AdminThumbMixin, upload_to
 
 
-class BlogPost(Displayable, Ownable, RichText, AdminThumbMixin):
+class AbstractBlogPost(Displayable, Ownable, RichText, AdminThumbMixin):
     """
     A blog post.
     """
 
-    categories = models.ManyToManyField("BlogCategory",
+    categories = models.ManyToManyField(settings.BLOG_CATEGORY_MODEL,
                                         verbose_name=_("Categories"),
                                         blank=True, related_name="blogposts")
     allow_comments = models.BooleanField(verbose_name=_("Allow comments"),
@@ -33,6 +33,7 @@ class BlogPost(Displayable, Ownable, RichText, AdminThumbMixin):
     admin_thumb_field = "featured_image"
 
     class Meta:
+        abstract = True
         verbose_name = _("Blog post")
         verbose_name_plural = _("Blog posts")
         ordering = ("-publish_date",)
@@ -64,12 +65,19 @@ def get_absolute_url(self):
         return reverse(url_name, kwargs=kwargs)
 
 
-class BlogCategory(Slugged):
+class BlogPost(AbstractBlogPost):
+
+    class Meta(AbstractBlogPost.Meta):
+        swappable = 'BLOG_POST_MODEL'
+
+
+class AbstractBlogCategory(Slugged):
     """
     A category for grouping blog posts into a series.
     """
 
     class Meta:
+        abstract = True
         verbose_name = _("Blog Category")
         verbose_name_plural = _("Blog Categories")
         ordering = ("title",)
@@ -77,3 +85,9 @@ class Meta:
     @models.permalink
     def get_absolute_url(self):
         return ("blog_post_list_category", (), {"category": self.slug})
+
+
+class BlogCategory(AbstractBlogCategory):
+
+    class Meta(AbstractBlogCategory.Meta):
+        swappable = 'BLOG_CATEGORY_MODEL'
diff --git a/mezzanine/blog/templatetags/blog_tags.py b/mezzanine/blog/templatetags/blog_tags.py
index 8d352536e9..a1decf0bd4 100644
--- a/mezzanine/blog/templatetags/blog_tags.py
+++ b/mezzanine/blog/templatetags/blog_tags.py
@@ -5,12 +5,14 @@
 from django.db.models import Count, Q
 from django.utils import timezone
 
+from mezzanine.blog import get_post_model, get_category_model
 from mezzanine.blog.forms import BlogPostForm
-from mezzanine.blog.models import BlogPost, BlogCategory
 from mezzanine.generic.models import Keyword
 from mezzanine import template
 
 User = get_user_model()
+BlogPost = get_post_model()
+BlogCategory = get_category_model()
 
 register = template.Library()
 
diff --git a/mezzanine/blog/tests.py b/mezzanine/blog/tests.py
index 0f76818d5f..4790b7b0f3 100644
--- a/mezzanine/blog/tests.py
+++ b/mezzanine/blog/tests.py
@@ -14,13 +14,19 @@
 from django.template import Context, Template
 from django.test import override_settings
 
-from mezzanine.blog.models import BlogPost
+from mezzanine.blog import get_post_model
 from mezzanine.conf import settings
 from mezzanine.core.models import CONTENT_STATUS_PUBLISHED
-from mezzanine.pages.models import Page, RichTextPage
+from mezzanine.pages import get_page_model, get_rich_text_page_model
+from mezzanine.utils.apps import accounts_installed, pages_installed
 from mezzanine.utils.tests import TestCase
 
 
+BlogPost = get_post_model()
+Page = get_page_model()
+RichTextPage = get_rich_text_page_model()
+
+
 class BlogTests(TestCase):
 
     def test_blog_views(self):
@@ -38,9 +44,7 @@ def test_blog_views(self):
         response = self.client.get(blog_post.get_absolute_url())
         self.assertEqual(response.status_code, 200)
 
-    @skipUnless("mezzanine.accounts" in settings.INSTALLED_APPS and
-                "mezzanine.pages" in settings.INSTALLED_APPS,
-                "accounts and pages apps required")
+    @skipUnless(accounts_installed() and pages_installed(), "accounts and pages apps required")
     def test_login_protected_blog(self):
         """
         Test the blog is login protected if its page has login_required
diff --git a/mezzanine/blog/translation.py b/mezzanine/blog/translation.py
index dfb9e828d7..bbe84c1c0d 100644
--- a/mezzanine/blog/translation.py
+++ b/mezzanine/blog/translation.py
@@ -2,7 +2,11 @@
 from mezzanine.core.translation import (TranslatedSlugged,
                                         TranslatedDisplayable,
                                         TranslatedRichText)
-from mezzanine.blog.models import BlogCategory, BlogPost
+from mezzanine.blog import get_post_model, get_category_model
+
+
+BlogPost = get_post_model()
+BlogCategory = get_category_model()
 
 
 class TranslatedBlogPost(TranslatedDisplayable, TranslatedRichText):
@@ -12,5 +16,6 @@ class TranslatedBlogPost(TranslatedDisplayable, TranslatedRichText):
 class TranslatedBlogCategory(TranslatedSlugged):
     fields = ()
 
+
 translator.register(BlogCategory, TranslatedBlogCategory)
 translator.register(BlogPost, TranslatedBlogPost)
diff --git a/mezzanine/blog/views.py b/mezzanine/blog/views.py
index 3e41361e9f..07feca3d86 100644
--- a/mezzanine/blog/views.py
+++ b/mezzanine/blog/views.py
@@ -9,13 +9,15 @@
 from django.template.response import TemplateResponse
 from django.utils.translation import ugettext_lazy as _
 
-from mezzanine.blog.models import BlogPost, BlogCategory
+from mezzanine.blog.models get_post_model, get_category_model
 from mezzanine.blog.feeds import PostsRSS, PostsAtom
 from mezzanine.conf import settings
 from mezzanine.generic.models import Keyword
 from mezzanine.utils.views import paginate
 
 User = get_user_model()
+BlogPost = get_post_model()
+BlogCategory = get_category_model()
 
 
 def blog_post_list(request, tag=None, year=None, month=None, username=None,
diff --git a/mezzanine/boot/lazy_admin.py b/mezzanine/boot/lazy_admin.py
index a375d3eed6..5a26b0eba7 100644
--- a/mezzanine/boot/lazy_admin.py
+++ b/mezzanine/boot/lazy_admin.py
@@ -7,6 +7,7 @@
     NotRegistered, AlreadyRegistered)
 from django.shortcuts import redirect
 
+from mezzanine.utils.apps import pages_installed
 from mezzanine.utils.importing import import_dotted_path
 
 
@@ -104,7 +105,7 @@ def urls(self):
             url("^displayable_links.js$", displayable_links_js,
                 name="displayable_links_js"),
         ]
-        if "mezzanine.pages" in settings.INSTALLED_APPS:
+        if pages_installed():
             from mezzanine.pages.views import admin_page_ordering
             urls.append(url("^admin_page_ordering/$", admin_page_ordering,
                             name="admin_page_ordering"))
diff --git a/mezzanine/conf/translation.py b/mezzanine/conf/translation.py
index d3b075e52f..4e5ad92d47 100644
--- a/mezzanine/conf/translation.py
+++ b/mezzanine/conf/translation.py
@@ -5,4 +5,5 @@
 class TranslatedSetting(TranslationOptions):
     fields = ('value',)
 
+
 translator.register(Setting, TranslatedSetting)
diff --git a/mezzanine/core/management/commands/createdb.py b/mezzanine/core/management/commands/createdb.py
index 47ae7b09b4..1cecfdf803 100644
--- a/mezzanine/core/management/commands/createdb.py
+++ b/mezzanine/core/management/commands/createdb.py
@@ -115,7 +115,8 @@ def create_pages(self):
             if self.verbosity >= 1:
                 print("\nCreating demo pages: About us, Contact form, "
                         "Gallery ...\n")
-            from mezzanine.galleries.models import Gallery
+            from mezzanine.galleries import get_gallery_model
+            Gallery = get_gallery_model()
             call_command("loaddata", "mezzanine_optional.json")
             zip_name = "gallery.zip"
             copy_test_to_media("mezzanine.core", zip_name)
diff --git a/mezzanine/core/models.py b/mezzanine/core/models.py
index b4c3a08c89..e70ec78a37 100644
--- a/mezzanine/core/models.py
+++ b/mezzanine/core/models.py
@@ -25,14 +25,11 @@
 from mezzanine.core.managers import DisplayableManager, CurrentSiteManager
 from mezzanine.generic.fields import KeywordsField
 from mezzanine.utils.html import TagCloser
-from mezzanine.utils.models import base_concrete_model, get_user_model_name
+from mezzanine.utils.models import base_concrete_model
 from mezzanine.utils.sites import current_site_id, current_request
 from mezzanine.utils.urls import admin_url, slugify, unique_slug
 
 
-user_model_name = get_user_model_name()
-
-
 def wrapped_manager(klass):
     if settings.USE_MODELTRANSLATION:
         from modeltranslation.manager import MultilingualManager
@@ -507,7 +504,7 @@ class Ownable(models.Model):
     Abstract model that provides ownership of an object for a user.
     """
 
-    user = models.ForeignKey(user_model_name, on_delete=models.CASCADE,
+    user = models.ForeignKey(settings.AUTH_USER_MODEL, on_delete=models.CASCADE,
         verbose_name=_("Author"), related_name="%(class)ss")
 
     class Meta:
@@ -577,7 +574,7 @@ class SitePermission(models.Model):
     access.
     """
 
-    user = models.OneToOneField(user_model_name, on_delete=models.CASCADE,
+    user = models.OneToOneField(settings.AUTH_USER_MODEL, on_delete=models.CASCADE,
         verbose_name=_("Author"), related_name="%(class)ss")
     sites = models.ManyToManyField("sites.Site", blank=True,
                                    verbose_name=_("Sites"))
diff --git a/mezzanine/core/sitemaps.py b/mezzanine/core/sitemaps.py
index 8c4f24fb4f..e0220cbb53 100644
--- a/mezzanine/core/sitemaps.py
+++ b/mezzanine/core/sitemaps.py
@@ -3,14 +3,14 @@
 from django.contrib.sitemaps import Sitemap
 from django.contrib.sites.models import Site
 
-from mezzanine.conf import settings
 from mezzanine.core.models import Displayable
+from mezzanine.utils.apps import blog_installed
 from mezzanine.utils.sites import current_site_id
 
 
-blog_installed = "mezzanine.blog" in settings.INSTALLED_APPS
-if blog_installed:
-    from mezzanine.blog.models import BlogPost
+if blog_installed():
+    from mezzanine.blog import get_post_model
+    BlogPost = get_post_model()
 
 
 class DisplayableSitemap(Sitemap):
diff --git a/mezzanine/core/tests.py b/mezzanine/core/tests.py
index 1cc89f899f..e71020a2c9 100644
--- a/mezzanine/core/tests.py
+++ b/mezzanine/core/tests.py
@@ -41,9 +41,10 @@
 from mezzanine.core.managers import DisplayableManager
 from mezzanine.core.models import (CONTENT_STATUS_DRAFT,
                                    CONTENT_STATUS_PUBLISHED)
+from mezzanine.forms import get_form_model
 from mezzanine.forms.admin import FieldAdmin
-from mezzanine.forms.models import Form
-from mezzanine.pages.models import Page, RichTextPage
+from mezzanine.pages import get_page_model, get_rich_text_page_model
+from mezzanine.utils.apps import pages_installed
 from mezzanine.utils.deprecation import (get_middleware_setting,
                                          get_middleware_setting_name)
 from mezzanine.utils.importing import import_dotted_path
@@ -52,6 +53,11 @@
 from mezzanine.utils.html import TagCloser, escape
 
 
+Form = get_form_model()
+Page = get_page_model()
+RichTextPage = get_rich_text_page_model()
+
+
 class CoreTests(TestCase):
 
     def test_tagcloser(self):
@@ -93,8 +99,7 @@ def test_utils(self):
             self.fail("mezzanine.utils.imports.import_dotted_path"
                       "could not import \"mezzanine.core\"")
 
-    @skipUnless("mezzanine.pages" in settings.INSTALLED_APPS,
-                "pages app required")
+    @skipUnless(pages_installed(), "pages app required")
     def test_description(self):
         """
         Test generated description is text version of the first line
@@ -105,8 +110,7 @@ def test_description(self):
                                            content=description * 3)
         self.assertEqual(page.description, strip_tags(description))
 
-    @skipUnless("mezzanine.pages" in settings.INSTALLED_APPS,
-                "pages app required")
+    @skipUnless(pages_installed(), "pages app required")
     def test_draft(self):
         """
         Test a draft object as only being viewable by a staff member.
@@ -129,8 +133,7 @@ def test_searchable_manager_search_fields(self):
         manager = DisplayableManager(search_fields={'foo': 10})
         self.assertTrue(manager._search_fields)
 
-    @skipUnless("mezzanine.pages" in settings.INSTALLED_APPS,
-                "pages app required")
+    @skipUnless(pages_installed(), "pages app required")
     def test_search(self):
         """
         Objects with status "Draft" should not be within search results.
@@ -218,8 +221,7 @@ def _test_site_pages(self, title, status, count):
         response = self.client.get(pages[0].get_absolute_url(), follow=True)
         self.assertEqual(response.status_code, code)
 
-    @skipUnless("mezzanine.pages" in settings.INSTALLED_APPS,
-                "pages app required")
+    @skipUnless(pages_installed(), "pages app required")
     def test_multisite(self):
         from django.conf import settings
 
@@ -317,8 +319,7 @@ def _get_formurl(self, response):
             action = response.request['PATH_INFO']
         return action
 
-    @skipUnless('mezzanine.pages' in settings.INSTALLED_APPS,
-                'pages app required')
+    @skipUnless(pages_installed(), 'pages app required')
     @override_settings(LANGUAGE_CODE="en")
     def test_password_reset(self):
         """
@@ -503,8 +504,7 @@ def middleware(request):
     return middleware
 
 
-@skipUnless("mezzanine.pages" in settings.INSTALLED_APPS,
-            "pages app required")
+@skipUnless(pages_installed(), "pages app required")
 class SiteRelatedTestCase(TestCase):
 
     def test_update_site(self):
diff --git a/mezzanine/core/views.py b/mezzanine/core/views.py
index 494597c342..a3c189857b 100644
--- a/mezzanine/core/views.py
+++ b/mezzanine/core/views.py
@@ -30,9 +30,10 @@
 from mezzanine.conf import settings
 from mezzanine.core.forms import get_edit_form
 from mezzanine.core.models import Displayable, SitePermission
-from mezzanine.utils.views import is_editable, paginate
+from mezzanine.utils.apps import pages_installed
 from mezzanine.utils.sites import has_site_permission
 from mezzanine.utils.urls import next_url
+from mezzanine.utils.views import is_editable, paginate
 
 
 mimetypes.init()
@@ -176,8 +177,9 @@ def displayable_links_js(request):
     TinyMCE.
     """
     links = []
-    if "mezzanine.pages" in settings.INSTALLED_APPS:
-        from mezzanine.pages.models import Page
+    if pages_installed():
+        from mezzanine.pages import get_page_model
+        Page = get_page_model()
         is_page = lambda obj: isinstance(obj, Page)
     else:
         is_page = lambda obj: False
diff --git a/mezzanine/forms/__init__.py b/mezzanine/forms/__init__.py
index bf441dce5d..d748337e80 100644
--- a/mezzanine/forms/__init__.py
+++ b/mezzanine/forms/__init__.py
@@ -5,3 +5,20 @@
 from __future__ import unicode_literals
 
 from mezzanine import __version__  # noqa
+from mezzanine.utils.models import get_swappable_model
+
+
+def get_form_model():
+    return get_swappable_model("FORM_MODEL")
+
+
+def get_field_model():
+    return get_swappable_model("FIELD_MODEL")
+
+
+def get_form_entry_model():
+    return get_swappable_model("FORM_ENTRY_MODEL")
+
+
+def get_field_entry_model():
+    return get_swappable_model("FIELD_ENTRY_MODEL")
diff --git a/mezzanine/forms/admin.py b/mezzanine/forms/admin.py
index d59f6ad963..0a680d0455 100644
--- a/mezzanine/forms/admin.py
+++ b/mezzanine/forms/admin.py
@@ -20,12 +20,18 @@
 from mezzanine.core.admin import TabularDynamicInlineAdmin
 from mezzanine.core.forms import DynamicInlineAdminForm
 from mezzanine.forms.forms import EntriesForm
-from mezzanine.forms.models import Form, Field, FormEntry, FieldEntry
+from mezzanine.forms import get_form_model, get_form_entry_model
+from mezzanine.forms import get_field_model, get_field_entry_model
 from mezzanine.pages.admin import PageAdmin
 from mezzanine.utils.static import static_lazy as static
 from mezzanine.utils.urls import admin_url, slugify
 
 
+Form = get_form_model()
+Field = get_field_model()
+FormEntry = get_form_entry_model()
+FieldEntry = get_field_entry_model()
+
 fs = FileSystemStorage(location=settings.FORMS_UPLOAD_ROOT)
 
 # Copy the fieldsets for PageAdmin and add the extra fields for FormAdmin.
diff --git a/mezzanine/forms/forms.py b/mezzanine/forms/forms.py
index af8baa4c23..bfa93e58bd 100644
--- a/mezzanine/forms/forms.py
+++ b/mezzanine/forms/forms.py
@@ -21,10 +21,13 @@
 
 from mezzanine.conf import settings
 from mezzanine.forms import fields
-from mezzanine.forms.models import FormEntry, FieldEntry
+from mezzanine.forms import get_form_entry_model, get_field_entry_model
 from mezzanine.utils.email import split_addresses as split_choices
 
 
+FormEntry = get_form_entry_model()
+FieldEntry = get_field_entry_model()
+
 fs = FileSystemStorage(location=settings.FORMS_UPLOAD_ROOT)
 
 ##############################
diff --git a/mezzanine/forms/migrations/0001_initial.py b/mezzanine/forms/migrations/0001_initial.py
index 8044a7f753..b450b12326 100644
--- a/mezzanine/forms/migrations/0001_initial.py
+++ b/mezzanine/forms/migrations/0001_initial.py
@@ -28,6 +28,7 @@ class Migration(migrations.Migration):
                 ('help_text', models.CharField(max_length=100, verbose_name='Help text', blank=True)),
             ],
             options={
+                'swappable': 'FIELD_MODEL',
                 'ordering': ('_order',),
                 'verbose_name': 'Field',
                 'verbose_name_plural': 'Fields',
@@ -42,6 +43,7 @@ class Migration(migrations.Migration):
                 ('value', models.CharField(max_length=2000, null=True)),
             ],
             options={
+                'swappable': 'FIELD_ENTRY_MODEL',
                 'verbose_name': 'Form field entry',
                 'verbose_name_plural': 'Form field entries',
             },
@@ -61,6 +63,7 @@ class Migration(migrations.Migration):
                 ('email_message', models.TextField(help_text='Emails sent based on the above options will contain each of the form fields entered. You can also enter a message here that will be included in the email.', verbose_name='Message', blank=True)),
             ],
             options={
+                'swappable': 'FORM_MODEL',
                 'ordering': ('_order',),
                 'verbose_name': 'Form',
                 'verbose_name_plural': 'Forms',
@@ -75,6 +78,7 @@ class Migration(migrations.Migration):
                 ('form', models.ForeignKey(related_name='entries', to='forms.Form', on_delete=models.CASCADE)),
             ],
             options={
+                'swappable': 'FORM_ENTRY_MODEL',
                 'verbose_name': 'Form entry',
                 'verbose_name_plural': 'Form entries',
             },
diff --git a/mezzanine/forms/models.py b/mezzanine/forms/models.py
index 6e34c42124..463ca65dbe 100644
--- a/mezzanine/forms/models.py
+++ b/mezzanine/forms/models.py
@@ -11,7 +11,7 @@
 from mezzanine.pages.models import Page
 
 
-class Form(Page, RichText):
+class AbstractForm(Page, RichText):
     """
     A user-built form.
     """
@@ -35,10 +35,17 @@ class Form(Page, RichText):
                     "a message here that will be included in the email."))
 
     class Meta:
+        abstract = True
         verbose_name = _("Form")
         verbose_name_plural = _("Forms")
 
 
+class Form(AbstractForm):
+
+    class Meta(AbstractForm.Meta):
+        swappable = 'FORM_MODEL'
+
+
 class FieldManager(models.Manager):
     """
     Only show visible fields when displaying actual form..
@@ -107,39 +114,60 @@ def is_a(self, *args):
         return self.field_type in args
 
 
-class Field(AbstractBaseField):
-    form = models.ForeignKey("Form", on_delete=models.CASCADE,
+class AbstractField(AbstractBaseField):
+    form = models.ForeignKey(settings.FORM_MODEL, on_delete=models.CASCADE,
         related_name="fields")
 
     class Meta(AbstractBaseField.Meta):
+        abstract = True
         order_with_respect_to = "form"
 
 
-class FormEntry(models.Model):
+class Field(AbstractField):
+
+    class Meta(AbstractField.Meta):
+        swappable = 'FIELD_MODEL'
+
+
+class AbstractFormEntry(models.Model):
     """
     An entry submitted via a user-built form.
     """
 
-    form = models.ForeignKey("Form", on_delete=models.CASCADE,
+    form = models.ForeignKey(settings.FORM_MODEL, on_delete=models.CASCADE,
         related_name="entries")
     entry_time = models.DateTimeField(_("Date/time"))
 
     class Meta:
+        abstract = True
         verbose_name = _("Form entry")
         verbose_name_plural = _("Form entries")
 
 
-class FieldEntry(models.Model):
+class FormEntry(AbstractFormEntry):
+
+    class Meta(AbstractFormEntry.Meta):
+        swappable = 'FORM_ENTRY_MODEL'
+
+
+class AbstractFieldEntry(models.Model):
     """
     A single field value for a form entry submitted via a user-built form.
     """
 
-    entry = models.ForeignKey("FormEntry", on_delete=models.CASCADE,
+    entry = models.ForeignKey(settings.FORM_ENTRY_MODEL, on_delete=models.CASCADE,
         related_name="fields")
     field_id = models.IntegerField()
     value = models.CharField(max_length=settings.FORMS_FIELD_MAX_LENGTH,
                              null=True)
 
     class Meta:
+        abstract = True
         verbose_name = _("Form field entry")
         verbose_name_plural = _("Form field entries")
+
+
+class FieldEntry(AbstractFieldEntry):
+
+    class Meta(AbstractFieldEntry.Meta):
+        swappable = 'FIELD_ENTRY_MODEL'
diff --git a/mezzanine/forms/page_processors.py b/mezzanine/forms/page_processors.py
index 04e300ca00..d4db3316a0 100644
--- a/mezzanine/forms/page_processors.py
+++ b/mezzanine/forms/page_processors.py
@@ -4,14 +4,17 @@
 from django.template import RequestContext
 
 from mezzanine.conf import settings
+from mezzanine.forms import get_form_model
 from mezzanine.forms.forms import FormForForm
-from mezzanine.forms.models import Form
 from mezzanine.forms.signals import form_invalid, form_valid
 from mezzanine.pages.page_processors import processor_for
 from mezzanine.utils.email import split_addresses, send_mail_template
 from mezzanine.utils.views import is_spam
 
 
+Form = get_form_model()
+
+
 def format_value(value):
     """
     Convert a list into a comma separated string, for displaying
diff --git a/mezzanine/forms/tests.py b/mezzanine/forms/tests.py
index 3ca7e2632b..9cb0d7aafb 100644
--- a/mezzanine/forms/tests.py
+++ b/mezzanine/forms/tests.py
@@ -6,12 +6,14 @@
 from django import forms
 from mezzanine.conf import settings
 from mezzanine.core.models import CONTENT_STATUS_PUBLISHED
-from mezzanine.forms import fields
+from mezzanine.forms import fields, get_form_model
 from mezzanine.forms.forms import FormForForm
-from mezzanine.forms.models import Form
 from mezzanine.utils.tests import TestCase
 
 
+Form = get_form_model()
+
+
 class TestsForm(TestCase):
 
     def test_forms(self):
diff --git a/mezzanine/forms/translation.py b/mezzanine/forms/translation.py
index 75214291f4..f7316a5419 100644
--- a/mezzanine/forms/translation.py
+++ b/mezzanine/forms/translation.py
@@ -1,6 +1,10 @@
 from modeltranslation.translator import translator, TranslationOptions
 from mezzanine.core.translation import TranslatedRichText
-from mezzanine.forms.models import Form, Field
+from mezzanine.forms import get_form_model, get_field_model
+
+
+Form = get_form_model()
+Field = get_field_model()
 
 
 class TranslatedForm(TranslatedRichText):
@@ -10,5 +14,6 @@ class TranslatedForm(TranslatedRichText):
 class TranslatedField(TranslationOptions):
     fields = ('label', 'choices', 'default', 'placeholder_text', 'help_text',)
 
+
 translator.register(Form, TranslatedForm)
 translator.register(Field, TranslatedField)
diff --git a/mezzanine/galleries/__init__.py b/mezzanine/galleries/__init__.py
index 0884d14f7b..ee27e28da0 100644
--- a/mezzanine/galleries/__init__.py
+++ b/mezzanine/galleries/__init__.py
@@ -4,3 +4,12 @@
 from __future__ import unicode_literals
 
 from mezzanine import __version__  # noqa
+from mezzanine.utils.models import get_swappable_model
+
+
+def get_gallery_model():
+    return get_swappable_model("GALLERY_MODEL")
+
+
+def get_gallery_image_model():
+    return get_swappable_model("GALLERY_IMAGE_MODEL")
diff --git a/mezzanine/galleries/admin.py b/mezzanine/galleries/admin.py
index ff98052e92..73a93a5ec7 100644
--- a/mezzanine/galleries/admin.py
+++ b/mezzanine/galleries/admin.py
@@ -4,10 +4,14 @@
 
 from mezzanine.core.admin import TabularDynamicInlineAdmin
 from mezzanine.pages.admin import PageAdmin
-from mezzanine.galleries.models import Gallery, GalleryImage
+from mezzanine.galleries import get_gallery_model, get_gallery_image_model
 from mezzanine.utils.static import static_lazy as static
 
 
+Gallery = get_gallery_model()
+GalleryImage = get_gallery_image_model()
+
+
 class GalleryImageInline(TabularDynamicInlineAdmin):
     model = GalleryImage
 
diff --git a/mezzanine/galleries/migrations/0001_initial.py b/mezzanine/galleries/migrations/0001_initial.py
index 2f9bbdc1cf..37f94b71d6 100644
--- a/mezzanine/galleries/migrations/0001_initial.py
+++ b/mezzanine/galleries/migrations/0001_initial.py
@@ -20,6 +20,7 @@ class Migration(migrations.Migration):
                 ('zip_import', models.FileField(help_text="Upload a zip file containing images, and they'll be imported into this gallery.", upload_to='galleries', verbose_name='Zip import', blank=True)),
             ],
             options={
+                'swappable': 'GALLERY_MODEL',
                 'ordering': ('_order',),
                 'verbose_name': 'Gallery',
                 'verbose_name_plural': 'Galleries',
@@ -36,6 +37,7 @@ class Migration(migrations.Migration):
                 ('gallery', models.ForeignKey(related_name='images', to='galleries.Gallery', on_delete=models.CASCADE)),
             ],
             options={
+                'swappable': 'GALLERY_IMAGE_MODEL',
                 'ordering': ('_order',),
                 'verbose_name': 'Image',
                 'verbose_name_plural': 'Images',
diff --git a/mezzanine/galleries/models.py b/mezzanine/galleries/models.py
index 1637cb1747..835112203b 100644
--- a/mezzanine/galleries/models.py
+++ b/mezzanine/galleries/models.py
@@ -111,20 +111,27 @@ def save(self, delete_zip_import=True, *args, **kwargs):
                 self.zip_import.delete(save=True)
 
 
-class Gallery(Page, RichText, BaseGallery):
+class AbstractGallery(Page, RichText, BaseGallery):
     """
     Page bucket for gallery photos.
     """
 
     class Meta:
+        abstract = True
         verbose_name = _("Gallery")
         verbose_name_plural = _("Galleries")
 
 
+class Gallery(AbstractGallery):
+
+    class Meta(AbstractGallery.Meta):
+        swappable = 'GALLERY_MODEL'
+
+
 @python_2_unicode_compatible
-class GalleryImage(Orderable):
+class AbstractGalleryImage(Orderable):
 
-    gallery = models.ForeignKey("Gallery", on_delete=models.CASCADE,
+    gallery = models.ForeignKey(settings.GALLERY_MODEL, on_delete=models.CASCADE,
         related_name="images")
     file = FileField(_("File"), max_length=200, format="Image",
         upload_to=upload_to("galleries.GalleryImage.file", "galleries"))
@@ -132,6 +139,7 @@ class GalleryImage(Orderable):
                                                            blank=True)
 
     class Meta:
+        abstract = True
         verbose_name = _("Image")
         verbose_name_plural = _("Images")
 
@@ -153,4 +161,10 @@ def save(self, *args, **kwargs):
             name = "".join([s.upper() if i == 0 or name[i - 1] == " " else s
                             for i, s in enumerate(name)])
             self.description = name
-        super(GalleryImage, self).save(*args, **kwargs)
+        super(AbstractGalleryImage, self).save(*args, **kwargs)
+
+
+class GalleryImage(AbstractGalleryImage):
+
+    class Meta(AbstractGalleryImage.Meta):
+        swappable = 'GALLERY_IMAGE_MODEL'
diff --git a/mezzanine/galleries/tests.py b/mezzanine/galleries/tests.py
index 5dc5ca007b..7b2e829a3f 100644
--- a/mezzanine/galleries/tests.py
+++ b/mezzanine/galleries/tests.py
@@ -8,10 +8,14 @@
 
 from mezzanine.conf import settings
 from mezzanine.core.templatetags.mezzanine_tags import thumbnail
-from mezzanine.galleries.models import Gallery, GALLERIES_UPLOAD_DIR
+from mezzanine.galleries import get_gallery_model
+from mezzanine.galleries.models import GALLERIES_UPLOAD_DIR
 from mezzanine.utils.tests import TestCase, copy_test_to_media
 
 
+Gallery = get_gallery_model()
+
+
 class GalleriesTests(TestCase):
 
     def test_gallery_import(self):
diff --git a/mezzanine/galleries/translation.py b/mezzanine/galleries/translation.py
index 5026979136..99dc4d14d8 100644
--- a/mezzanine/galleries/translation.py
+++ b/mezzanine/galleries/translation.py
@@ -1,6 +1,10 @@
 from modeltranslation.translator import translator, TranslationOptions
 from mezzanine.core.translation import TranslatedRichText
-from mezzanine.galleries.models import GalleryImage, Gallery
+from mezzanine.galleries import get_gallery_model, get_gallery_image_model
+
+
+Gallery = get_gallery_model()
+GalleryImage = get_gallery_image_model()
 
 
 class TranslatedGallery(TranslatedRichText):
@@ -10,5 +14,6 @@ class TranslatedGallery(TranslatedRichText):
 class TranslatedGalleryImage(TranslationOptions):
     fields = ('description',)
 
+
 translator.register(Gallery, TranslatedGallery)
 translator.register(GalleryImage, TranslatedGalleryImage)
diff --git a/mezzanine/generic/models.py b/mezzanine/generic/models.py
index 64a55fc676..74da44d2db 100644
--- a/mezzanine/generic/models.py
+++ b/mezzanine/generic/models.py
@@ -14,7 +14,6 @@
 from mezzanine.generic.managers import CommentManager, KeywordManager
 from mezzanine.core.models import Slugged, Orderable
 from mezzanine.conf import settings
-from mezzanine.utils.models import get_user_model_name
 from mezzanine.utils.sites import current_site_id
 
 
@@ -132,7 +131,7 @@ class Rating(models.Model):
                                     on_delete=models.CASCADE)
     object_pk = models.IntegerField()
     content_object = GenericForeignKey("content_type", "object_pk")
-    user = models.ForeignKey(get_user_model_name(), on_delete=models.CASCADE,
+    user = models.ForeignKey(settings.AUTH_USER_MODEL, on_delete=models.CASCADE,
         verbose_name=_("Rater"), null=True, related_name="%(class)ss")
 
     class Meta:
diff --git a/mezzanine/generic/tests.py b/mezzanine/generic/tests.py
index 22923fb1cd..bb54e87341 100644
--- a/mezzanine/generic/tests.py
+++ b/mezzanine/generic/tests.py
@@ -9,21 +9,24 @@
 from django.contrib.contenttypes.models import ContentType
 from django.core.urlresolvers import reverse
 
-from mezzanine.blog.models import BlogPost
+from mezzanine.blog import get_post_model
 from mezzanine.conf import settings
-
 from mezzanine.core.models import CONTENT_STATUS_PUBLISHED
 from mezzanine.generic.forms import RatingForm, KeywordsWidget
 from mezzanine.generic.models import AssignedKeyword, Keyword, ThreadedComment
 from mezzanine.generic.views import comment
-from mezzanine.pages.models import RichTextPage
+from mezzanine.pages import get_rich_text_page_model
+from mezzanine.utils.apps import blog_installed, pages_installed
 from mezzanine.utils.tests import TestCase
 
 
+BlogPost = get_post_model()
+RichTextPage = get_rich_text_page_model()
+
+
 class GenericTests(TestCase):
 
-    @skipUnless("mezzanine.blog" in settings.INSTALLED_APPS,
-                "blog app required")
+    @skipUnless(blog_installed(), "blog app required")
     def test_rating(self):
         """
         Test that ratings can be posted and avarage/count are calculated.
@@ -54,8 +57,7 @@ def test_rating(self):
             self.assertEqual(blog_post.rating_sum, _sum)
             self.assertEqual(blog_post.rating_average, average)
 
-    @skipUnless("mezzanine.blog" in settings.INSTALLED_APPS,
-                "blog app required")
+    @skipUnless(blog_installed(), "blog app required")
     def test_comment_ratings(self):
         """
         Test that a generic relation defined on one of Mezzanine's generic
@@ -78,8 +80,7 @@ def test_comment_ratings(self):
             comment.rating_average,
             (settings.RATINGS_RANGE[0] + settings.RATINGS_RANGE[-1]) / 2)
 
-    @skipUnless("mezzanine.blog" in settings.INSTALLED_APPS,
-                "blog app required")
+    @skipUnless(blog_installed(), "blog app required")
     def test_comment_queries(self):
         """
         Test that rendering comments executes the same number of
@@ -103,8 +104,7 @@ def test_comment_queries(self):
         after = self.queries_used_for_template(template, **context)
         self.assertEqual(before, after)
 
-    @skipUnless("mezzanine.pages" in settings.INSTALLED_APPS,
-                "pages app required")
+    @skipUnless(pages_installed(), "pages app required")
     def test_keywords(self):
         """
         Test that the keywords_string field is correctly populated.
diff --git a/mezzanine/pages/__init__.py b/mezzanine/pages/__init__.py
index 5e8d9cf897..a606b28452 100644
--- a/mezzanine/pages/__init__.py
+++ b/mezzanine/pages/__init__.py
@@ -5,6 +5,19 @@
 from __future__ import unicode_literals
 
 from mezzanine import __version__  # noqa
+from mezzanine.utils.models import get_swappable_model
 
 
 default_app_config = 'mezzanine.pages.apps.PagesConfig'
+
+
+def get_page_model():
+    return get_swappable_model("PAGE_MODEL")
+
+
+def get_rich_text_page_model():
+    return get_swappable_model("RICH_TEXT_PAGE_MODEL")
+
+
+def get_link_model():
+    return get_swappable_model("LINK_MODEL")
diff --git a/mezzanine/pages/admin.py b/mezzanine/pages/admin.py
index eb4e313ef3..d128be12ed 100644
--- a/mezzanine/pages/admin.py
+++ b/mezzanine/pages/admin.py
@@ -10,10 +10,16 @@
 from mezzanine.conf import settings
 from mezzanine.core.admin import (
     ContentTypedAdmin, DisplayableAdmin, DisplayableAdminForm)
-from mezzanine.pages.models import Page, RichTextPage, Link
+from mezzanine.pages import get_page_model, get_rich_text_page_model, get_link_model
+from mezzanine.pages.models import AbstractLink
 from mezzanine.utils.urls import clean_slashes
 
 
+Page = get_page_model()
+RichTextPage = get_rich_text_page_model()
+Link = get_link_model()
+
+
 # Add extra fields for pages to the Displayable fields.
 # We only add the menu field if PAGE_MENU_TEMPLATES has values.
 page_fieldsets = deepcopy(DisplayableAdmin.fieldsets)
@@ -32,7 +38,7 @@ def clean_slug(self):
         """
         self.instance._old_slug = self.instance.slug
         new_slug = self.cleaned_data['slug']
-        if not isinstance(self.instance, Link) and new_slug != "/":
+        if not isinstance(self.instance, AbstractLink) and new_slug != "/":
             new_slug = clean_slashes(self.cleaned_data['slug'])
         return new_slug
 
diff --git a/mezzanine/pages/context_processors.py b/mezzanine/pages/context_processors.py
index bb16a7f8dd..34d93afb86 100644
--- a/mezzanine/pages/context_processors.py
+++ b/mezzanine/pages/context_processors.py
@@ -1,5 +1,5 @@
 
-from mezzanine.pages.models import Page
+from mezzanine.pages.models import AbstractPage
 
 
 def page(request):
@@ -12,7 +12,7 @@ def page(request):
     """
     context = {}
     page = getattr(request, "page", None)
-    if isinstance(page, Page):
+    if isinstance(page, AbstractPage):
         # set_helpers has always expected the current template context,
         # but here we're just passing in our context dict with enough
         # variables to satisfy it.
diff --git a/mezzanine/pages/middleware.py b/mezzanine/pages/middleware.py
index a15db7203d..70a1099ec3 100644
--- a/mezzanine/pages/middleware.py
+++ b/mezzanine/pages/middleware.py
@@ -6,13 +6,16 @@
 
 from mezzanine.conf import settings
 from mezzanine.pages import context_processors, page_processors
-from mezzanine.pages.models import Page
+from mezzanine.pages import get_page_model
 from mezzanine.pages.views import page as page_view
 from mezzanine.utils.conf import middlewares_or_subclasses_installed
 from mezzanine.utils.deprecation import (MiddlewareMixin, is_authenticated)
 from mezzanine.utils.urls import path_to_slug
 
 
+Page = get_page_model()
+
+
 class PageMiddleware(MiddlewareMixin):
     """
     Adds a page to the template context for the current response.
diff --git a/mezzanine/pages/migrations/0001_initial.py b/mezzanine/pages/migrations/0001_initial.py
index eb1bbcfe60..ddf33cef44 100644
--- a/mezzanine/pages/migrations/0001_initial.py
+++ b/mezzanine/pages/migrations/0001_initial.py
@@ -37,6 +37,7 @@ class Migration(migrations.Migration):
                 ('login_required', models.BooleanField(default=False, help_text='If checked, only logged in users can view this page', verbose_name='Login required')),
             ],
             options={
+                'swappable': 'PAGE_MODEL',
                 'ordering': ('titles',),
                 'verbose_name': 'Page',
                 'verbose_name_plural': 'Pages',
@@ -49,6 +50,7 @@ class Migration(migrations.Migration):
                 ('page_ptr', models.OneToOneField(parent_link=True, auto_created=True, primary_key=True, serialize=False, to='pages.Page', on_delete=models.CASCADE)),
             ],
             options={
+                'swappable': 'LINK_MODEL',
                 'ordering': ('_order',),
                 'verbose_name': 'Link',
                 'verbose_name_plural': 'Links',
@@ -62,6 +64,7 @@ class Migration(migrations.Migration):
                 ('content', mezzanine.core.fields.RichTextField(verbose_name='Content')),
             ],
             options={
+                'swappable': 'RICH_TEXT_PAGE_MODEL',
                 'ordering': ('_order',),
                 'verbose_name': 'Rich text page',
                 'verbose_name_plural': 'Rich text pages',
diff --git a/mezzanine/pages/models.py b/mezzanine/pages/models.py
index e778be73b4..85a7a55862 100644
--- a/mezzanine/pages/models.py
+++ b/mezzanine/pages/models.py
@@ -35,13 +35,13 @@ class Meta:
 
 
 @python_2_unicode_compatible
-class Page(BasePage, ContentTyped):
+class AbstractPage(BasePage):
     """
     A page in the page tree. This is the base class that custom content types
     need to subclass.
     """
 
-    parent = models.ForeignKey("Page", on_delete=models.CASCADE,
+    parent = models.ForeignKey(settings.PAGE_MODEL, on_delete=models.CASCADE,
         blank=True, null=True, related_name="children")
     in_menus = MenusField(_("Show in menus"), blank=True, null=True)
     titles = models.CharField(editable=False, max_length=1000, null=True)
@@ -85,7 +85,7 @@ def save(self, *args, **kwargs):
             titles.insert(0, parent.title)
             parent = parent.parent
         self.titles = " / ".join(titles)
-        super(Page, self).save(*args, **kwargs)
+        super(AbstractPage, self).save(*args, **kwargs)
 
     def description_from_content(self):
         """
@@ -94,10 +94,11 @@ def description_from_content(self):
         ``Page`` instance, so that all fields defined on the subclass
         are available for generating the description.
         """
-        if self.__class__ == Page:
+        from mezzanine.pages import get_page_model
+        if self.__class__ == get_page_model():
             if self.content_model:
                 return self.get_content_model().description_from_content()
-        return super(Page, self).description_from_content()
+        return super(AbstractPage, self).description_from_content()
 
     def get_ascendants(self, for_user=None):
         """
@@ -117,6 +118,8 @@ def get_ascendants(self, for_user=None):
             if self.slug:
                 kwargs = {"for_user": for_user}
                 with override_current_site_id(self.site_id):
+                    from mezzanine.pages import get_page_model
+                    Page = get_page_model()
                     pages = Page.objects.with_ascendants_for_slug(self.slug,
                                                                   **kwargs)
                 self._ascendants = pages[0]._ascendants
@@ -136,7 +139,7 @@ def get_slug(self):
         """
         Recursively build the slug from the chain of parents.
         """
-        slug = super(Page, self).get_slug()
+        slug = super(AbstractPage, self).get_slug()
         if self.parent is not None:
             return "%s/%s" % (self.parent.slug, slug)
         return slug
@@ -147,6 +150,8 @@ def set_slug(self, new_slug):
         start with this page's slug.
         """
         slug_prefix = "%s/" % self.slug
+        from mezzanine.pages import get_page_model
+        Page = get_page_model()
         for page in Page.objects.filter(slug__startswith=slug_prefix):
             if not page.overridden():
                 page.slug = new_slug + page.slug[len(self.slug):]
@@ -271,28 +276,48 @@ def get_template_name(self):
         return None
 
 
-class RichTextPage(Page, RichText):
+class Page(AbstractPage):
+
+    class Meta(AbstractPage.Meta):
+        swappable = 'PAGE_MODEL'
+
+
+class AbstractRichTextPage(AbstractPage, RichText):
     """
     Implements the default type of page with a single Rich Text
     content field.
     """
 
     class Meta:
+        abstract = True
         verbose_name = _("Rich text page")
         verbose_name_plural = _("Rich text pages")
 
 
-class Link(Page):
+class RichTextPage(AbstractRichTextPage):
+
+    class Meta(AbstractRichTextPage.Meta):
+        swappable = 'RICH_TEXT_PAGE_MODEL'
+
+
+class AbstractLink(AbstractPage):
     """
     A general content type for creating external links in the page
     menu.
     """
 
     class Meta:
+        abstract = True
         verbose_name = _("Link")
         verbose_name_plural = _("Links")
 
 
+class Link(AbstractLink):
+
+    class Meta(AbstractLink.Meta):
+        swappable = 'LINK_MODEL'
+
+
 class PageMoveException(Exception):
     """
     Raised by ``can_move()`` when the move permission is denied. Takes
diff --git a/mezzanine/pages/page_processors.py b/mezzanine/pages/page_processors.py
index 4b6385b198..f6108ef939 100644
--- a/mezzanine/pages/page_processors.py
+++ b/mezzanine/pages/page_processors.py
@@ -7,7 +7,7 @@
 from django.apps import apps
 from django.utils.module_loading import module_has_submodule
 
-from mezzanine.pages.models import Page
+from mezzanine.pages.models import AbstractPage
 from mezzanine.utils.importing import get_app_name_list
 
 
@@ -34,11 +34,11 @@ def processor_for(content_model_or_slug, exact_page=False):
             content_model = apps.get_model(*parts)
         except (TypeError, ValueError, LookupError):
             slug = content_model_or_slug
-    elif issubclass(content_model_or_slug, Page):
+    elif issubclass(content_model_or_slug, AbstractPage):
         content_model = content_model_or_slug
     else:
         raise TypeError("%s is not a valid argument for page_processor, "
-                        "which should be a model subclass of Page in class "
+                        "which should be a model subclass of AbstractPage in class "
                         "or string form (app.model), or a valid slug" %
                         content_model_or_slug)
 
diff --git a/mezzanine/pages/templatetags/pages_tags.py b/mezzanine/pages/templatetags/pages_tags.py
index 9692d6a6c6..acdf093dc4 100644
--- a/mezzanine/pages/templatetags/pages_tags.py
+++ b/mezzanine/pages/templatetags/pages_tags.py
@@ -8,10 +8,12 @@
 from django.template.loader import get_template
 from django.utils.translation import ugettext_lazy as _
 
-from mezzanine.pages.models import Page
-from mezzanine.utils.urls import home_slug
 from mezzanine import template
+from mezzanine.pages import get_page_model
+from mezzanine.utils.urls import home_slug
+
 
+Page = get_page_model()
 
 register = template.Library()
 
diff --git a/mezzanine/pages/tests.py b/mezzanine/pages/tests.py
index 61e1ab6e43..a0c32e8d40 100644
--- a/mezzanine/pages/tests.py
+++ b/mezzanine/pages/tests.py
@@ -20,16 +20,19 @@
 from mezzanine.conf import settings
 from mezzanine.core.models import CONTENT_STATUS_PUBLISHED
 from mezzanine.core.request import current_request
-from mezzanine.pages.models import Page, RichTextPage
+from mezzanine.pages import get_page_model, get_rich_text_page_model
 from mezzanine.pages.admin import PageAdminForm
 from mezzanine.pages.fields import MenusField
 from mezzanine.pages.checks import check_context_processor
 from mezzanine.urls import PAGES_SLUG
+from mezzanine.utils.apps import accounts_installed
 from mezzanine.utils.sites import override_current_site_id
 from mezzanine.utils.tests import TestCase
 
 
 User = get_user_model()
+Page = get_page_model()
+RichTextPage = get_rich_text_page_model()
 
 
 class PagesTests(TestCase):
@@ -176,7 +179,6 @@ def test_login_required(self):
             title="Public", slug="public", login_required=False)
         private, _ = RichTextPage.objects.get_or_create(
             title="Private", slug="private", login_required=True)
-        accounts_installed = ("mezzanine.accounts" in settings.INSTALLED_APPS)
 
         args = {"for_user": AnonymousUser()}
         self.assertTrue(public in RichTextPage.objects.published(**args))
@@ -208,7 +210,7 @@ def test_login_required(self):
             # a second redirect that encodes the next parameter.
             login_next = urlquote_plus(login_next)
         login = "%s%s?next=%s" % (login_prefix, login_url, login_next)
-        if accounts_installed:
+        if accounts_installed():
             # For an inaccessible page with mezzanine.accounts we should
             # see a login page, without it 404 is more appropriate than an
             # admin login.
@@ -220,7 +222,7 @@ def test_login_required(self):
         response = self.client.get(public_url, follow=True)
         self.assertEqual(response.status_code, 200)
 
-        if accounts_installed:
+        if accounts_installed():
             # View / pattern name redirect properly, without encoding next.
             login = "%s%s?next=%s" % (login_prefix, login_url, private_url)
             with override_settings(LOGIN_URL="login"):
@@ -236,7 +238,7 @@ def test_login_required(self):
         response = self.client.get(public_url, follow=True)
         self.assertEqual(response.status_code, 200)
 
-        if accounts_installed:
+        if accounts_installed():
             with override_settings(LOGIN_URL="mezzanine.accounts.views.login"):
                 response = self.client.get(public_url, follow=True)
                 self.assertEqual(response.status_code, 200)
diff --git a/mezzanine/pages/translation.py b/mezzanine/pages/translation.py
index e8b565e396..b911f45e26 100644
--- a/mezzanine/pages/translation.py
+++ b/mezzanine/pages/translation.py
@@ -1,7 +1,12 @@
 from modeltranslation.translator import translator, TranslationOptions
 from mezzanine.core.translation import (TranslatedDisplayable,
                                         TranslatedRichText)
-from mezzanine.pages.models import Page, RichTextPage, Link
+from mezzanine.pages import get_page_model, get_rich_text_page_model, get_link_model
+
+
+Page = get_page_model()
+RichTextPage = get_rich_text_page_model()
+Link = get_link_model()
 
 
 class TranslatedPage(TranslatedDisplayable):
@@ -15,6 +20,7 @@ class TranslatedRichTextPage(TranslatedRichText):
 class TranslatedLink(TranslationOptions):
     fields = ()
 
+
 translator.register(Page, TranslatedPage)
 translator.register(RichTextPage, TranslatedRichTextPage)
 translator.register(Link, TranslatedLink)
diff --git a/mezzanine/pages/views.py b/mezzanine/pages/views.py
index 86d1667969..ba73196073 100644
--- a/mezzanine/pages/views.py
+++ b/mezzanine/pages/views.py
@@ -8,10 +8,14 @@
 from django.contrib import messages
 from django.template.response import TemplateResponse
 
-from mezzanine.pages.models import Page, PageMoveException
+from mezzanine.pages import get_page_model
+from mezzanine.pages.models import PageMoveException
 from mezzanine.utils.urls import home_slug
 
 
+Page = get_page_model()
+
+
 @staff_member_required
 def admin_page_ordering(request):
     """
diff --git a/mezzanine/project_template/project_name/settings.py b/mezzanine/project_template/project_name/settings.py
index 5625f12c99..9f0c846e43 100644
--- a/mezzanine/project_template/project_name/settings.py
+++ b/mezzanine/project_template/project_name/settings.py
@@ -77,6 +77,20 @@
 #     ),
 # )
 
+# Settings to override the content models
+#
+PAGE_MODEL = "pages.Page"
+RICH_TEXT_PAGE_MODEL = "pages.RichTextPage"
+LINK_MODEL = "pages.Link"
+BLOG_POST_MODEL = "blog.BlogPost"
+BLOG_CATEGORY_MODEL = "blog.BlogCategory"
+FORM_MODEL = "forms.Form"
+FORM_ENTRY_MODEL = "forms.FormEntry"
+FIELD_MODEL = "forms.Field"
+FIELD_ENTRY_MODEL = "forms.FieldEntry"
+GALLERY_MODEL = "galleries.Gallery"
+GALLERY_IMAGE_MODEL = "galleries.GalleryImage"
+
 # Setting to turn on featured images for blog posts. Defaults to False.
 #
 # BLOG_USE_FEATURED_IMAGE = True
diff --git a/mezzanine/urls.py b/mezzanine/urls.py
index 28da77a491..99c995dcef 100644
--- a/mezzanine/urls.py
+++ b/mezzanine/urls.py
@@ -14,6 +14,7 @@
 
 from mezzanine.conf import settings
 from mezzanine.core.sitemaps import DisplayableSitemap
+from mezzanine.utils.apps import accounts_installed, blog_installed, pages_installed
 
 
 urlpatterns = []
@@ -56,7 +57,7 @@
 ]
 
 # Mezzanine's Accounts app
-if "mezzanine.accounts" in settings.INSTALLED_APPS:
+if accounts_installed():
     # We don't define a URL prefix here such as /account/ since we want
     # to honour the LOGIN_* settings, which Django has prefixed with
     # /account/ by default. So those settings are used in accounts.urls
@@ -65,8 +66,7 @@
     ]
 
 # Mezzanine's Blog app.
-blog_installed = "mezzanine.blog" in settings.INSTALLED_APPS
-if blog_installed:
+if blog_installed():
     BLOG_SLUG = settings.BLOG_SLUG.rstrip("/")
     if BLOG_SLUG:
         BLOG_SLUG += "/"
@@ -77,11 +77,11 @@
 
 # Mezzanine's Pages app.
 PAGES_SLUG = ""
-if "mezzanine.pages" in settings.INSTALLED_APPS:
+if pages_installed():
     # No BLOG_SLUG means catch-all patterns belong to the blog,
     # so give pages their own prefix and inject them before the
     # blog urlpatterns.
-    if blog_installed and not BLOG_SLUG.rstrip("/"):
+    if blog_installed() and not BLOG_SLUG.rstrip("/"):
         PAGES_SLUG = getattr(settings, "PAGES_SLUG", "pages").strip("/") + "/"
         blog_patterns_start = urlpatterns.index(blog_patterns[0])
         urlpatterns[blog_patterns_start:len(blog_patterns)] = [
diff --git a/mezzanine/utils/apps.py b/mezzanine/utils/apps.py
new file mode 100644
index 0000000000..81ab1e07ab
--- /dev/null
+++ b/mezzanine/utils/apps.py
@@ -0,0 +1,26 @@
+from django.conf import settings
+from django.core.exceptions import ImproperlyConfigured
+
+from mezzanine.utils.models import get_model
+
+
+def accounts_installed():
+    return "mezzanine.accounts" in settings.INSTALLED_APPS
+
+
+def pages_installed():
+    """Detects any of the vanilla pages app or a complete replacement."""
+    try:
+        get_model(settings.PAGE_MODEL)
+    except ImproperlyConfigured:
+        return False
+    return True
+
+
+def blog_installed():
+    """Detects any of the vanilla blog app or a complete replacement."""
+    try:
+        get_model(settings.POST_MODEL)
+    except ImproperlyConfigured:
+        return False
+    return True
diff --git a/mezzanine/utils/models.py b/mezzanine/utils/models.py
index f791549abf..f3e5bcc352 100644
--- a/mezzanine/utils/models.py
+++ b/mezzanine/utils/models.py
@@ -4,6 +4,7 @@
 
 from future.utils import with_metaclass
 
+from django.apps import apps
 from django.conf import settings
 from django.contrib.auth import get_user_model as django_get_user_model
 from django.core.exceptions import ImproperlyConfigured
@@ -22,11 +23,30 @@ def get_user_model():
     return django_get_user_model()
 
 
-def get_user_model_name():
+def get_model(model_name, setting_name):
     """
-    Returns the app_label.object_name string for the user model.
+    Returns the model by its "app_label.object_name" reference.
     """
-    return getattr(settings, "AUTH_USER_MODEL", "auth.User")
+    try:
+        return apps.get_model(model_name, require_ready=False)
+    except ValueError:
+        raise ImproperlyConfigured(
+            "%s must be of the form 'app_label.model_name'" % setting_name
+        )
+    except LookupError:
+        raise ImproperlyConfigured(
+            "%s refers to model '%s' that has not been installed" % (
+                setting_name, model_name
+            )
+        )
+
+
+def get_swappable_model(setting_name):
+    try:
+        model_name = getattr(settings, setting_name)
+    except AttributeError:
+        raise ImproperlyConfigured("settings have no %s" % setting_name)
+    return get_model(model_name, setting_name)
 
 
 def _base_concrete_model(abstract, klass):
diff --git a/mezzanine/utils/urls.py b/mezzanine/utils/urls.py
index b55da70304..b3466383d1 100644
--- a/mezzanine/utils/urls.py
+++ b/mezzanine/utils/urls.py
@@ -14,6 +14,7 @@
 from django.utils import translation
 
 from mezzanine.conf import settings
+from mezzanine.utils.apps import accounts_installed
 from mezzanine.utils.importing import import_dotted_path
 
 
@@ -105,7 +106,7 @@ def login_redirect(request):
     - homepage
     """
     ignorable_nexts = ("",)
-    if "mezzanine.accounts" in settings.INSTALLED_APPS:
+    if accounts_installed():
         from mezzanine.accounts import urls
         ignorable_nexts += (urls.SIGNUP_URL, urls.LOGIN_URL, urls.LOGOUT_URL)
     next = next_url(request) or ""