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by nk23x

62 Add-ons in this Collection

uBlock Origin by Raymond Hill

Rated 5 out of 5 stars 4,127 reviews

4,914,485 users

Finally, an efficient blocker. Easy on CPU and memory.

Stylish - Custom themes for any website by userstyles.org

Rated 4 out of 5 stars 1,186 reviews

305,708 users

Stylish lets you customize any website with custom user styles (themes for websites). Choose from the largest userstyles library to change the color scheme, background, and skin for Google, Facebook, YouTube and many, many more sites.

uMatrix by Raymond Hill

Rated 5 out of 5 stars 271 reviews

81,483 users

Point & click to forbid/allow any class of requests made by your browser. Use it to block scripts, iframes, ads, facebook, etc.

Provider for Google Calendar by Philipp Kewisch

Rated 4 out of 5 stars 961 reviews

318,485 users

Allows bidirectional access to Google Calendar

Enigmail by Patrick Brunschwig

Rated 4 out of 5 stars 199 reviews

138,714 users

OpenPGP message encryption and authentication for Thunderbird and SeaMonkey.

Theme Font & Size Changer by Baris Derin, Access Firefox Project

Rated 4 out of 5 stars 318 reviews

82,572 users

Theme Font & Size Changer lets you change the global font size and font family used for the user interface in Firefox. Design your browser with your favorite font.

EPUBReader by epubreader

Rated 4 out of 5 stars 239 reviews

244,560 users

With EPUBReader you can read ePub files just in Firefox. No additional software needed!

SQLite Manager by lazierthanthou

Rated 4 out of 5 stars 222 reviews

120,797 users

Manage any SQLite database on your computer.

User Agent Switcher by chrispederick

Rated 4 out of 5 stars 302 reviews

171,738 users

The User Agent Switcher extension adds a menu and a toolbar button to switch the user agent of a browser.

gContactSync by Josh Geenen

Rated 4 out of 5 stars 231 reviews

89,372 users

Synchronizes contacts & groups between Thunderbird or SeaMonkey and Google Contacts. Imports Facebook friends, contacts you follow on Twitter, and more.

Screengrab! by Oleksandr

Rated 5 out of 5 stars 332 reviews

87,001 users

Screengrab! Saves or upload webpages as images.

Password Exporter by Justin Scott (fligtar), Jorge Villalobos

Rated 4 out of 5 stars 492 reviews

157,973 users

This add-on allows you to export your saved passwords and disabled login hosts using XML or CSV files that can be imported later.

Note: This add-on won't work in Firefox 57. It may eventually if the APIs to access passwords are implemented.

Imagus by Deathamns

Rated 4 out of 5 stars 184 reviews

46,102 users

Enlarge thumbnails, and show images/videos from links with a mouse hover.

Mail Merge by Alexander Bergmann

Rated 5 out of 5 stars 152 reviews

57,582 users

Mass Mail and Personal Mail

Session Manager by Michael Kraft

Rated 5 out of 5 stars 790 reviews

207,136 users

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.
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