Sidebery provides the list of tabs structured in a tree and bookmarks within the customizable panels. It aims to be fast, beautiful* and configurable. Some of the key features:

You can use a simple flat list of tabs or tree structure. Tree layout allows you to fold sub-tries, creates groups with a custom name to organize open pages.

Simple catalogs of your bookmarks. You can drag and drop links or tabs to create bookmarks and vice-versa. Basic operations: open in new window / sort / create / edit / delete.

Other bookmarks features:

• Automatically delete an open bookmark from "Other Bookmarks" folder.
• Highlight open bookmarks and activate its tab instead of opening new on clicking.

Configurable panels will help you sort your tabs.

You can set "Include" and "Exclude" url-rules, proxy config and UserAgent header for each container.

Sidebery allows you to change the context menu for tabs and bookmarks. You can enable/disable/move different options, create sub-menus/separators.

You can select multiple tabs or bookmarks only with the mouse - push right mouse button and then move the cursor to adjust selection range.
note: This feature is not working with the native context menu.

Also, you can use ctrl+click/shift+click method or use keyboard shortcuts.

Sidebery provides full control of styles for sidebar and group page via variables and custom CSS.

NOTE: To get currently available css-selectors use debugger:

• Enter "about:debugging" in the URL bar
• In the left-hand menu, click This Firefox (or This Nightly)
• Click Inspect next to Sidebery extension
• Select frame to inspect
  • Click on the rectangular icon (with three sections) in top-right area of the debugger page
  • Select "/sidebar/index.html" for sidebar frame
  • Select "/group/group.html" for group page frame
• Browse "Inspector" tab

You can setup auto snapshots that will keep info about open windows and tabs.

• User guide
  • Containers
  • Panels
  • Tabs
  • Bookmarks
  • Drag and Drop
• Firefox Styles Snippets (via userChrome.css)
  • Completely hide tabs strip
  • Hide sidebar top-menu
• Sidebery Styles Snippets

Install dependencies: npm install
Build all parts of addon in release mode: npm run build
Run ./addon in browser: npm run dev.ext[.beta|.nightly]
Create addon archive in ./dist: npm run build.ext

MIT