Web Development

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NoScript Security Suite Requires Restart

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.

Rated 5 out of 5 stars (1,599)
57,042 weekly downloads

Firebug

Firebug integrates with Firefox to put a wealth of development tools at your fingertips while you browse. You can edit, debug, and monitor CSS, HTML, and JavaScript live in any web page...

Rated 4 out of 5 stars (2,124)
55,985 weekly downloads

Ghostery Compatible with Firefox 57+ Featured

Increase your browsing privacy, protection, and speed.

Rated 4 out of 5 stars (1,605)
42,773 weekly downloads

iMacros for Firefox

Automate Firefox. Record and replay repetitive tasks. If you're tired of manually visiting the same sites, filling out forms, downloading files and extracting data, then iMacros is for you! Save time, effort and money with iMacros browser automation!

Rated 4 out of 5 stars (553)
42,008 weekly downloads

Emoji Cheatsheet Compatible with Firefox 57+ Featured

A reference for the codes to generate Emojis on popular sites like GitHub or Basecamp and Unicode characters for Twitter and Facebook.
Search Emojis by name or view recently selected items. Emojis are automatically copied to the clipboard.

Rated 4 out of 5 stars (47)
36,352 weekly downloads

Selenium IDE Requires Restart

Selenium IDE is an integrated development environment for Selenium tests. It is implemented as a Firefox extension, and allows you to record, edit, and debug tests.

Rated 4 out of 5 stars (55)
20,904 weekly downloads

FirePath Requires Restart

FirePath is a Firebug extension that adds a development tool to edit, inspect and generate XPath 1.0 expressions, CSS 3 selectors and JQuery selectors (Sizzle selector engine).

Rated 4 out of 5 stars (26)
17,874 weekly downloads

Awesome Screenshot Plus - Capture, Annotate & More Compatible with Firefox 57+ Featured

Capture the whole page or any portion, annotate it with rectangles, circles, arrows, lines and text, blur sensitive info, one-click upload to share. And more!

Rated 4 out of 5 stars (1,624)
17,597 weekly downloads

FoxyProxy Standard Requires Restart

FoxyProxy is an advanced proxy management tool that completely replaces Firefox's limited proxying capabilities. For a simpler tool and less advanced configuration options, please use FoxyProxy Basic.

Rated 4 out of 5 stars (459)
16,136 weekly downloads

User Agent Switcher Requires Restart

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

Rated 4 out of 5 stars (277)
15,835 weekly downloads

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 (900)
15,043 weekly downloads

Disable WebRTC Compatible with Firefox 57+

WebRTC leaks your actual IP addresses from behind your VPN, by default.

Rated 4 out of 5 stars (94)
13,216 weekly downloads

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 (511)
12,918 weekly downloads

Disconnect Compatible with Firefox 57+ Featured

Make the web faster, more private, and more secure.

Rated 4 out of 5 stars (254)
12,808 weekly downloads

Random Agent Spoofer

Rotates complete browser profiles ( from real browsers / devices ) at a user defined time interval. It includes many extra privacy enhancing options

Rated 4 out of 5 stars (160)
12,364 weekly downloads

QuickJava Requires Restart

Allows quick enable and disable of Javascript, Cookies, Image Animations, Flash, Silverlight, Images, Stylesheets and Proxy from the Toolbar. This is great for increasing security or decreasing bandwidth. (Read details for info on Java with FF52+!)

Rated 5 out of 5 stars (190)
11,495 weekly downloads

FireFTP Requires Restart

FireFTP is a free, secure, cross-platform FTP/SFTP client for Mozilla Firefox which provides easy and intuitive access to FTP/SFTP servers.

Check out my new project, FireSSH!

Rated 4 out of 5 stars (950)
11,458 weekly downloads

Hide My IP VPN

Hide My IP VPN is number one tool for hiding your IP and unblocking any web site!

Rated 5 out of 5 stars (26)
11,042 weekly downloads

SQLite Manager Requires Restart

Manage any SQLite database on your computer.

Rated 4 out of 5 stars (83)
10,328 weekly downloads

Flagfox

Displays a country flag depicting the location of the current website's server and provides a multitude of tools such as site safety checks, whois, translation, similar sites, validation, URL shortening, and more...

Rated 5 out of 5 stars (688)
10,256 weekly downloads