Update default apps (#1345)

* Removed existing text about default app inclusion that was written in 2021 and added the actual default applications and screenshots, as well as instructions for accessing and changing default apps.

* Slight reorganization and some text revisions

---------

Co-authored-by: Jacob Kauffmann <jacob@system76.com>

Author: Socialhappiness

content/default-apps.md

@@ -1,11 +1,14 @@
 ---
 title: Default Apps in Pop!_OS
 description: >
-  Principles for default app inclusion.
+  Applications included in Pop!_OS 24.04
 keywords:
   - Support
   - Applications
   - System76
+  - Pop
+  - Linux
+  - COSMIC
 
 facebookImage: /_social/article
 twitterImage: /_social/article
@@ -15,31 +18,58 @@ section: pop
 tableOfContents: true
 ---
 
-Pop!\_OS: Productive out of the box. Easy to modify to meet individual needs
+### Access Default Applications in Pop!_OS
 
-## Principles for default app inclusion
+Pop!_OS comes with a set of default applications for general usage. Some of the default applications are pictured in the Applications Library below.
 
-1. Include apps that create a cohesive desktop experience
+![Default Application icons in Pop!_OS lined up. From left, COSMIC Files, COSMIC Media Player, COSMIC Settings, COSMIC Store, COSMIC Terminal, COSMIC Text Editor, Firefox](/images/default-apps/default-apps-lined-up.png)
 
-   * A link opens a browser
-   * An event invite adds it to the Calendar
-   * Defining a word opens Dictionary
-   * An address opens Maps
+### Change Default Applications in Pop!_OS
 
-2. Leverage online accounts
+The default applications configuration is located within System Settings on the 'Applications' page.
 
-   * Surface users online data in local applications
+![COSMIC System Settings panel highlighting the Applications and Default Applications options](/images/default-apps/default-apps-access.png)
 
-3. Prefer GNOME Core apps and apps that follow the GNOME HIG
+![Default Applications Window in Pop!_OS 24.04](/images/default-apps/default-applications-access-2.png)
 
-4. Include apps that open common formats
+To change the default application for Pop!_OS to use when opening a certain file type, locate the line corresponding to the file type, then click on the current default application's name for that type. A dropdown menu will offer alternative options to select as the default application. The checkmark indicates the active selection.
 
-5. Include utilities that enable accessing and manipulating external media
+![Change default applications in Pop!_OS within the settings panel](/images/default-apps/default-applications-change-1.png)
 
-   * Make external media immediately useful
+### Explore Default Applications in Pop!_OS 24.04 LTS
 
-6. When there is no clear app for a universal need, surface options in the app store
+The first application listed in the dock by default is the [Firefox web browser](https://www.firefox.com):
 
-7. Do not duplicate functionality
+![Firefox Web Browser accessible by clicking the fox icon in the dock](/images/default-apps/cosmic-firefox-1.png)
 
-8. Be constantly cognisant of memory use
+The rest of the apps, listed below, are part of the COSMIC desktop environment.
+
+- [COSMIC Files](https://github.com/pop-os/cosmic-files) - File manager:
+    ![COSMIC Files Application accessible by clicking the file folder icon in the dock](/images/default-apps/cosmic-files.png)
+
+- [COSMIC Text Editor](https://github.com/pop-os/cosmic-edit) - Text editor:
+    ![COSMIC Text Editor accessible by clicking the notepad and pen icon in the dock](/images/default-apps/cosmic-edit.png)
+
+- [COSMIC Terminal](https://github.com/pop-os/cosmic-term) - Terminal emulator:
+    ![COSMIC Terminal accessible by clicking the computer screen icon showing a command prompt](/images/default-apps/cosmic-terminal.png)
+
+- [COSMIC Store](https://github.com/pop-os/cosmic-store) - Application installation and update manager:
+    ![COSMIC Store accessible by clicking the shopping bag icon in the dock](/images/default-apps/cosmic-store.png)
+
+- [COSMIC Settings](https://github.com/pop-os/cosmic-settings) - Application to adjust system settings:
+    ![COSMIC Settings accessible by clicking the button toggle icon](/images/default-apps/cosmic-settings-1.png)
+
+Finally, the [COSMIC Media Player](https://github.com/pop-os/cosmic-player) is not pinned to the dock by default, but is available to open audio and video files:
+
+![COSMIC Media Player accessible by searching applications for Media Player](/images/default-apps/cosmic-media-player-1.png)
+
+### Key Components of Pop!_OS 24.04 LTS (initial release)
+
+- COSMIC Epoch 1 - The new [COSMIC Desktop Environment](https://github.com/pop-os/cosmic-epoch), designed and developed by System76.
+- Linux kernel 6.17.9
+- Mesa 25.1.5-1
+- NVIDIA Driver 580
+
+For a full list of components included in COSMIC Desktop, visit the [public repository](https://github.com/pop-os/cosmic-epoch) and review the README.
+
+### Download Pop!_OS 24.04 LTS at: [https://system76.com/pop/download/](https://system76.com/pop/download/)