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RequestPolicy Continued

Be in control of which cross-site requests are allowed. Improve the privacy of your browsing by not letting other sites know your browsing habits. Secure yourself from Cross-Site Request Forgery (CSRF) and other attacks.

Rated 4 out of 5 stars (12)
9,166 users
Updated October 10, 2016

RequestPolicy v0.5 Legacy Requires Restart

Be in control of which cross-site requests are allowed. Improve the privacy of your browsing by not letting other sites know your browsing habits. Secure yourself from Cross-Site Request Forgery (CSRF) and other attacks.

Rated 3 out of 5 stars (6)
1,397 users
Updated October 1, 2016

Full Web Page Screenshots (♥♥♥♥♥) Requires Restart

FireShot makes full web page screenshots. Demo: http://bit.ly/RlBQMV

Screenshots can be quickly captured and:

― Saved as Image or PDF
― Sent to clipboard
― Printed
― Annotated *
― Uploaded *
― E-Mailed *

* OS Windows only

Rated 5 out of 5 stars (480)
297,659 users
Updated August 29, 2016

PrefBar Requires Restart

The all in one toolbar(item). Houses and manages bigger amounts of buttons (Clear Cache, Clear Cookies, ...), Menus (User Agent spoof...) and checkboxes (Javascript, Flash, ...). Extensible from online-database or with self created buttons.

Rated 5 out of 5 stars (41)
14,669 users
Updated August 29, 2016

Stylish Requires Restart

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.

Rated 4 out of 5 stars (798)
434,379 users
Updated August 9, 2016

ACColorPicker

A full featured color selector tool, to work with colors, and easily find the colors you want.
很方便色取色器,可以页面上直接取色,然后再对颜色进行进一步的调整

Not yet rated
280 users
Updated August 5, 2016

Re-Pagination

See more search results etc. on one page, concatenating several pages together...

Rated 4 out of 5 stars (56)
6,712 users
Updated August 4, 2016

Remote XUL Manager

Manages the Remote XUL whitelist to allow websites and local files to load XUL content. For versions compatible with Firefox 41 and lower, see All Versions page below.

Rated 5 out of 5 stars (37)
82,194 users
Updated July 23, 2016

Click-to-Play Manager

Manages the Click-to-Play domain whitelist.

Rated 4 out of 5 stars (13)
2,633 users
Updated July 23, 2016

Live HTTP Headers (clone)

View HTTP headers of a page and while browsing.

This is an unofficial "Live HTTP headers" clone, mainly to fix the Replay feature!

Rated 4 out of 5 stars (7)
6,033 users
Updated July 16, 2016

Add-ons Manager - Version Number

Restores version numbers for all installed add-ons inside Add-on Manager on Firefox, Thunderbird and Seamonkey.

Rated 5 out of 5 stars (20)
1,901 users
Updated June 17, 2016

about:addons-memory 2016

Adds a new page that shows add-on memory usage

Rated 5 out of 5 stars (28)
15,326 users
Updated May 1, 2016

Web Server Check Tool Requires Restart

A tool to perform basic checks on web and DAV servers.

Not yet rated
169 users
Updated April 18, 2016

Form History Control Requires Restart

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.

Rated 5 out of 5 stars (94)
24,537 users
Updated March 21, 2016

Tiny JavaScript Debugger Requires Restart

TinyJSD is a JavaScript debugger for privileged code running Mozilla products like Firefox, Thunderbird, SeaMonkey. It serves to debug the application as well as extensions written in JavaScript.

Rated 4 out of 5 stars (8)
35,502 users
Updated March 16, 2016

BrightSide XUL Installer

Automatically installs a set of domains to the Remote XUL whitelist.

Not yet rated
1 user
Updated January 27, 2016

Link Properties Plus Requires Restart

Provides extended link properties: size of linked file, last modified time, etc.

Rated 5 out of 5 stars (15)
1,837 users
Updated December 20, 2015

GitHub Extension Installer

Install Browser Extensions straight from GitHub Repositories

Rated 4 out of 5 stars (20)
2,651 users
Updated December 7, 2015

MonkeyFix Requires Restart

Fixes up numerous SeaMonkey browser interface issues (eg. adding support for popup ALT attributes), as well as adding some handy features for developers and power users (eg. configure source viewer, work online/offline).

Rated 5 out of 5 stars (3)
283 users
Updated October 30, 2015

Live HTTP Headers (Fixed By ITWorld.com.pk) Requires Restart

View HTTP headers of a page and while browsing.
Live HTTP Header Fix By Danyial ITs Working On Firefox Again Fixed Reply Problem

Rated 4 out of 5 stars (5)
2,104 users
Updated August 31, 2015