Aggregate new tabs to a window which has most many tabs and largest size.

Provides ability to save selected tabs to local files for Firefox 63 and later.

Tree Style Tab, Show tabs like a tree.

Helps to show favicon image from tabs.Tab

A Firefox addon to remove duplicated linebreaks from text area.

Common confirmation dialog library for Firefox addons based on WebExtensions

Text Link, Allows URI texts written in webpages to be loaded by double clicks.

Multiple Tab Handler, Provides feature to close multiple tabs.

GitHub action to set "stale" automatically for issues not responded too long term

Configuration library for Firefox addons based on WebExtensions

Provides ability to copy title and URL of selected tabs to the clipboard for Firefox 63 and later.

This is a Firefox addon providing the "Bookmarks" subpanel for Tree Style Tab.

Provides "indent line" feature for Tree Style Tab extension.

Provides UI to start tab dragging for different purposes.

Provides ability to open only some bookmarks in a folder as a partial tree on Tree Style Tab.

Provides extra tree manipulation commands for Tree Style Tab.

Add ability to lock specific tree as "collapsed".

Provides ability to stick some state tabs to tab bar edges automatically, for Tree Style Tab.

Provides ability to group newly opened tabs automatically in various conditions with Tree Style Tab.

Provides a marker to indicate active tab position in Tree Style Tab sidebar.

Provides UI to show last active tab in a collapsed tree.

Second Search, Shows tiny popup for the search bar, to allow you to search by another engine quickly.

Popup ALT Attribute, Popups alternate texts of images or others like NetscapeCommunicator(Navigator) 4.x, and show long descriptions in the multi-row tooltip.

Menu-like UI library for Firefox addons based on WebExtensions

A project to issue Moezilla photobook including articles of Mozilla Firefox and Thunderbird history

Provides ability to localize your HTML file with i18n messages.