Web Development


User Agent Switcher Featured

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 (251)
403,723 users

Screengrab (fix version) Featured

Screengrab! saves webpages as images.
0.98 released!
New features: upload to internet

Rated 5 out of 5 stars (267)
165,442 users

The Addon Bar (Restored) No Restart Featured

Gives you a place to put all your add-on buttons without over-crowding the navigation bar.

Rated 5 out of 5 stars (286)
138,417 users

Font Finder 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 (67)
39,040 users

QR Code Image Generator No Restart Featured

Create a QR Code of the selected text or current URL. Use CTRL-SHIFT-Q to quickly see the QR Code. Also possible to create a QR Code from free text within Firefox. Works completely offline! Now with UTF8 support.

Rated 5 out of 5 stars (18)
18,849 users

FoxyProxy Standard Featured

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 (346)
328,967 users

FireFTP Featured

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 (935)
634,532 users

Nimbus Screen Capture - editable screenshots No Restart Featured

1) Screen capture web pages.
2) Selected regions.
3) Whole browser windows.
Edit screenshots and save the images to either local file or Google Drive. Annotate screenshots in a very user-friendly interface with different tools. Upload and share!

Rated 5 out of 5 stars (188)
130,195 users

User-Agent Switcher No Restart Featured

Quickly and easily switch between popular user-agent strings.

Rated 4 out of 5 stars (11)
35,708 users

Ghostery No Restart Featured

Enjoy a faster, safer and cleaner browsing experience.

Rated 5 out of 5 stars (1,238)
1,648,298 users

FireSSH Featured

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

Rated 4 out of 5 stars (87)
33,044 users

WebRank SEO Toolbar Featured

A toolbar that gives Google Pagerank, Alexa, Compete and Quantcast Rank, pages indexed and backlinks in Google, Bing and Yahoo. Bookmark webpages at PickMeWeb.com, view similar websites at SimilarSites.com. Delicious, Digg and Tweet Count.

Rated 4 out of 5 stars (68)
21,677 users

Disconnect Featured

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

Rated 4 out of 5 stars (157)
295,702 users

Classic Toolbar Buttons No Restart 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 (144)
42,868 users

Advanced Cookie Manager Featured

A must have tool for Web Developers and Testers to Manage and monitor web cookies.

Features List:
Export / Backup
Import / Restore
Monitor cookies

Available in English, French, Spanish, German and Italian languages.

Rated 4 out of 5 stars (30)
41,803 users

Clear Console 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 (60)
34,527 users

Stylish Featured

Restyle the web with Stylish, a user styles manager. Stylish lets you easily install themes and skins for Google, Facebook, YouTube, Orkut, and many, many other sites. You can even customize Firefox and other programs themselves.

Rated 4 out of 5 stars (763)
712,282 users

NoScript Security Suite Featured

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 (1,510)
2,486,773 users

ColorfulTabs Featured

The most beautiful yet the simplest add-on that makes a strong colorful appeal. Colors every tab in a different color and makes them easy to distinguish while beautifying the overall appearance of the interface. For Seamonkey & Flock. An essential. F...

Rated 4 out of 5 stars (995)
245,676 users

Easy Copy Featured

Copy links to a page with one click, ready to paste anywhere else, eg. emails, blogs, forums and Twitter. Copy a single page, all open tabs or all links on a page.

Rated 5 out of 5 stars (29)
19,743 users