Collection of add-ons I am currently testing/reviewing for my personal needs. Rather than clutter my main profile I create a secondary profile solely for testing out new profiles.
Save time by speeding up repetitive tasks. Get faster, parallelized downloads, see definitions, auto-load the next page, improve searching, and more. FastestFox will dramatically enhance your productivity!
Adds ClickOnce support and the ability to report installed .NET versions to the web server.
AutoPager automatically loads next pages when you reach the end of a page. It works on a ton of sites,Google,Yahoo..
It works well with most other add-ons adblock plus, WOT and most of the greasemonkey scripts.
You can also try AutoPagerLite.
Tweak Network will speed up the loading of web pages and increase the maximum number of simultaneous downloads from a site.
Open Bookmarks/History/Homepage/URL/Search in new tabs, and more utilities for tabbed browsing, including Protect/Lock/Faviconize/Unload Tab, Reload Every, Select and manipulate multiple tabs simultaneously, Tab Stacking/Coloring, etc.
Various enhancements for build-in "master password" (MP)
-Locks master security device on demand or after specified time
-Prompts for MP on browser startup
-Suppresses all or duplicate MP prompts
-Locks up entire application or individual windows
Manage form history entries (search, edit, cleanup, export/import) and easy text formfiller.
Auto-save text entered in any form while typing to allow fast recovery when disaster strikes.
Control for which webpage form history is saved or not.
This extension provides advanced configuration for your browser and many additional options, that are not displayed in the Firefox "Options..." dialog.
Open Bookmarks/History/Homepage/URL/Search in new tabs, and more utilities for tabbed browsing. This is a lite version of Tab Utilities (http://addons.mozilla.org/addon/59961).
Use Amplify to clip, share & spark conversation about excerpts from articles, blog posts, tweets or anything else you read on the web. Amplify supports autoposting to Twitter, Facebook, Wordpress, Posterous, Tumblr & more.