by nk23x

61 Add-ons in this Collection

uBlock Origin by Raymond Hill

Rated 5 out of 5 stars 4,676 reviews

5,215,040 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 1,257 reviews

340,933 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 307 reviews

85,558 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 966 reviews

341,941 users

Allows bidirectional access to Google Calendar

Enigmail by Patrick Brunschwig

Rated 4 out of 5 stars 201 reviews

144,592 users

OpenPGP message encryption and authentication for Thunderbird and SeaMonkey.

EPUBReader by epubreader

Rated 4 out of 5 stars 250 reviews

240,450 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 289 reviews

115,997 users

Manage any SQLite database on your computer.

gContactSync by Josh Geenen

Rated 4 out of 5 stars 232 reviews

96,095 users

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

User Agent Switcher by chrispederick

Rated 4 out of 5 stars 315 reviews

163,238 users

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

Screengrab! by Oleksandr

Rated 5 out of 5 stars 345 reviews

91,521 users

Screengrab! Saves or upload webpages as images.

Imagus by Deathamns

Rated 4 out of 5 stars 226 reviews

50,475 users

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

Mail Merge by Alexander Bergmann

Rated 5 out of 5 stars 154 reviews

63,513 users

Mass Mail and Personal Mail

Session Manager by Michael Kraft

Rated 5 out of 5 stars 830 reviews

196,332 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.

Password Exporter by Justin Scott (fligtar), Jorge Villalobos

Rated 4 out of 5 stars 531 reviews

151,752 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.

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

Rated 4 out of 5 stars 335 reviews

78,020 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.
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