About this Collection
My favorite add-ons
62 Add-ons in this Collection
Finally, an efficient blocker. Easy on CPU and memory.
The User Agent Switcher extension adds a menu and a toolbar button to switch the user agent of a browser.
Allows bidirectional access to Google Calendar
Restyle the web with Stylish, a user styles manager. Stylish lets you easily install themes and skins for Google, Facebook, YouTube, Tumblr, and many, many other sites. You can even customize Firefox and other programs themselves.
This extension allows you to export your saved passwords and disabled login hosts using XML or CSV files that can be imported later.
Session Manager saves and restores the state of all or some windows - either when you want it or automatically at startup and after crashes. It can also automatically save the state of open windows individually.
With EPUBReader you can read ePub files just in Firefox. No additional software needed!
OpenPGP message encryption and authentication for Thunderbird and SeaMonkey.
Synchronizes contacts & groups between Thunderbird or SeaMonkey and Google Contacts. Imports Facebook friends, contacts you follow on Twitter, and more.
Screengrab! saves webpages as images.
New features: upload to internet