SeaMonkey

by Zulkarnain K.

45 Add-ons in this Collection

Adblock Plus by Wladimir Palant

Rated 5 out of 5 stars 4,957 reviews

19,273,986 users

Blocks annoying video ads on YouTube, Facebook ads, banners and much more.

Adblock Plus blocks all annoying ads, and supports websites by not blocking unobtrusive ads by default (configurable).

DownThemAll! by Nils Maier, Federico Parodi, others

Rated 4 out of 5 stars 1,844 reviews

1,243,271 users

The first and only download manager/accelerator built inside Firefox!

NoScript Security Suite by Giorgio Maone

Rated 5 out of 5 stars 1,635 reviews

2,215,535 users

The best security you can get in a web browser!
Allow active content to run only from sites you trust, and protect yourself against XSS and Clickjacking attacks.

Ghostery by Ghostery

Rated 5 out of 5 stars 1,363 reviews

1,380,836 users

Increase your browsing privacy, protection, and speed.

Stylish by userstyles.org

Rated 4 out of 5 stars 863 reviews

444,204 users

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.

User Agent Switcher by chrispederick

Rated 4 out of 5 stars 268 reviews

330,834 users

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

Web Developer by chrispederick

Rated 5 out of 5 stars 260 reviews

462,244 users

The Web Developer extension adds various web developer tools to the browser.

SQLite Manager by lazierthanthou

Rated 4 out of 5 stars 68 reviews

200,813 users

Manage any SQLite database on your computer.

ColorZilla by Alex Sirota

Rated 4 out of 5 stars 344 reviews

254,037 users

Advanced Eyedropper, Color Picker, Gradient Generator and other colorful goodies...

Live HTTP Headers by Daniel Savard, Nikolas Co

Rated 4 out of 5 stars 172 reviews

140,477 users

View HTTP headers of a page and while browsing.

QuickNote by Leszek Życzkowski, Jed Brown, others

Rated 5 out of 5 stars 179 reviews

30,690 users

A simple note-taking extension.

HttpFox by Martin Theimer

Rated 4 out of 5 stars 172 reviews

84,438 users

An HTTP analyzer addon for Firefox

Image Zoom by Jason Adams

Rated 4 out of 5 stars 347 reviews

136,147 users

Adds zoom and rotation functionality for images...

Private Tab by Infocatcher

Rated 5 out of 5 stars 245 reviews

68,119 users

Adds private tabs.

JavaScript Deobfuscator by Wladimir Palant

Rated 5 out of 5 stars 20 reviews

48,881 users

This add-on shows you what JavaScript code runs on a web page, even if it is obfuscated and generated on the fly. Simply open JavaScript Deobfuscator from the Web Developer menu and watch the scripts being compiled/executed.
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