A collection of great Add-ons that i would like to use, mostly complementary ... only one Firefox is not enough.
Browse your bookmarks visually: create, edit, and manage preview images for all your bookmarks. Use bookmark images as a speed dial on newly opened tabs. Quickly transfer bookmarks, links and texts to your mobile phone using QR codes.
Picozu Shooter is a Mozilla Firefox browser extension, which allows you to take a screenshot of a given browser page, or a specific region of it and save it to a file, clipboard or Picozu Image Editor.
Keep your favorite Extensions synced with all your computers.
You can choose items displayed in the sidebar.
This extension did not work in MacOS X.
A tree of the bookmarks is displayed under search results of the sidebar bookmarks.
A location of the bookmark concerned is shown on the tree when you choose a bookmark of search results.
Note from Mozilla: This add-on has been discontinued. Try DragIt instead.
Allows you to open links in new tabs, and do more with drag and drop gestures easier.
Personalize your Firefox Title Bar! Anything placed on Menu Bar will be moved to Title Bar.
This splits the content area of the browser window as you like.
Move tabs into the titlebar in a normal (restored) window.
The about:me page provides a fun way to see personalized patterns and trends in browsing history.
Add Unsorted Bookmarks Folder to Bookmarks Menu
Creates a formatted page from bookmarks.
（alt. "BookmarksHome" for Firefox1.5）
☞ utf8 characters is an extension that contains a list of cool characters ☆ ✪ ✰ to copy and paste into your messages ❀ on sites that use utf, like twitter or wordpress ☺ ✓