Tree Style Tab, Show tabs like a tree.

Common confirmation dialog 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.

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

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

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

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

Multiple Tab Handler, Provides feature to close multiple tabs.

Add ability to lock specific tree as "collapsed".

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

Provides UI to start tab dragging for different purposes.

A Firefox addon to remove duplicated linebreaks from text area.

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

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

Simple event listener manager for modules in WebExtensions-based addons

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

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

Configuration library for Firefox addons based on WebExtensions

Helps to show favicon image from tabs.Tab

Provides ability to send/receive messages between contents and extensions, without any WebExtensions API.

Provides ability to send/receive messages between contents and extensions, without any WebExtensions API.

Provides ability to localize your HTML file with i18n messages.

Enforce indent alignment after opening parenthesis in control statements.

XUL/Migemo, Provides advanced incremental search for any language.

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

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

Provides extra tree manipulation commands for Tree Style Tab.