Web Development

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Auto Refresh Requires Restart

Auto Refresh will refresh or hard refresh any tab or group of tabs at individual or group intervals.

You can also customize your presets and save the ones you most use.

http://www.grizzlyape.com/addons/auto-refresh/

Rated 3 out of 5 stars (43)
1,889 weekly downloads

JavaScript Toggle On and Off

Toggle JavaScript engine on and off the easy way

Rated 5 out of 5 stars (3)
1,868 weekly downloads

Classic Toolbar Buttons Featured

'Classic Toolbar Buttons' add-on restores old toolbar button ui (known from Fx 4-7s small view, Fx 4-12s large view & Tb 5-14) for current Firefox, Thunderbird and Seamonkey versions on Windows.

Beta builds on versions page!

Rated 5 out of 5 stars (150)
1,811 weekly downloads

CacheViewer Requires Restart

This extenion is GUI Front-end of "about:cache"...

Rated 4 out of 5 stars (224)
1,786 weekly downloads

FoxyProxy Basic Requires Restart

FoxyProxy Basic is a simple on/off proxy switcher. More advanced features and configuration options are offered by FoxyProxy Standard.

Rated 4 out of 5 stars (31)
1,779 weekly downloads

Font Finder Requires Restart Featured

FontFinder is created for designers, developers and typographers. It allows a user to analyze the font information of any element on a page, copy any piece(s) of that information to the clipboard, and perform inline replacements to test new layouts.

Rated 4 out of 5 stars (71)
1,745 weekly downloads

JavaScript Deobfuscator

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.

Rated 5 out of 5 stars (20)
1,725 weekly downloads

Poster Requires Restart

A developer tool for interacting with web services and other web resources that lets you make HTTP requests, set the entity body, and content type. This allows you to interact with web services and inspect the results...

Rated 4 out of 5 stars (62)
1,670 weekly downloads

XPath Checker Requires Restart

An interactive editor for XPath expressions.

Rated 5 out of 5 stars (19)
1,520 weekly downloads

Pearl Crescent Page Saver screenshot tool Requires Restart

Save an image of a web page (including Flash content) to a file. Web page screenshots may be captured interactively or from the command line. Options allow you to control the output format (PNG or JPEG), image file name, scaling, and much more.

Rated 4 out of 5 stars (88)
1,468 weekly downloads

Clear Console Requires Restart Featured

One click to clear your cache, cookies, history, html5/local storage, http logins, all of them or restart your browser with/without notifications.

Rated 4 out of 5 stars (61)
1,466 weekly downloads

FlareGet Integration

FlareGet Browser Integration extension

Rated 4 out of 5 stars (5)
1,452 weekly downloads

Tilt 3D Requires Restart

A WebGL-based 3D visualization of a webpage.

Rated 4 out of 5 stars (38)
1,447 weekly downloads

Set proxy server with one click!

Set proxy server with one click! Visit Cool-proxy.net, the best resource of proxy servers and set your browser with one click.

Rated 5 out of 5 stars (1)
1,409 weekly downloads

Emoji Cheatsheet

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 (21)
1,402 weekly downloads

FireSSH Requires Restart Featured

FireSSH is a free, cross-platform SSH terminal client for Mozilla Firefox. Written entirely in Javascript!

Rated 4 out of 5 stars (92)
1,397 weekly downloads

NoRedirect Requires Restart

NoRedirect lets the user take control of HTTP redirects. It can be used to interdict an ISP's DNS search redirection hijacks, preview/screen "shortened" URLs (e.g., TinyURL), stop the annoying redirection of "smart" error pages, etc.

Rated 4 out of 5 stars (49)
1,391 weekly downloads

RefControl Requires Restart

Control what gets sent as the HTTP Referer on a per-site basis.

Rated 4 out of 5 stars (185)
1,371 weekly downloads

Html Validator Requires Restart

HTML Validator is a Mozilla extension that adds HTML validation inside Firefox and Mozilla. The number of errors of a HTML page is seen on the form of an icon

For Online HTML 5 validation, you need 0.962
http://users.skynet.be/mgueury/mozilla

Rated 4 out of 5 stars (215)
1,349 weekly downloads

Quick Locale Switcher Requires Restart

Allows you to quickly switch to a different language (User Interface, Spell Checker Dictionary and Website content) in your Mozilla application.

Rated 3 out of 5 stars (88)
1,331 weekly downloads