18 632 193 gebruikers
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).
6 498 373 gebruikers
The easy way to download and convert Web videos from hundreds of YouTube-like sites.
This works also for audio and picture galleries.
2 961 198 gebruikers
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Download all the links, movies and audio clips of a page at the maximum speed with a single click, using the most popular, lightweight and reliable external download managers.
805 286 gebruikers
The Web Developer extension adds various web developer tools to the browser.
396 185 gebruikers
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.
314 628 gebruikers
Advanced Eyedropper, Color Picker, Gradient Generator and other colorful goodies...
270 352 gebruikers
Session Manager saves and restores the state of all or some windows - either when you want it or automatically at startup and after crashes. It can also automatically save the state of open windows individually.
172 541 gebruikers
Draw a ruler across any webpage to check the width, height, or alignment of page elements in pixels.
167 228 gebruikers
FEBE (Firefox Environment Backup Extension) allows you to quickly and easily backup your Firefox extensions. In fact, it goes beyond just backing up -- It will actually rebuild your extensions individually into installable .xpi files.
153 654 gebruikers
YSlow analyzes web pages and suggests ways to improve their performance based on a set of rules for high performance web pages.
http://yslow.org is the official open source website.
246 460 gebruikers
Visual bookmarks for Firefox. (Works with all latest versions of Firefox)
283 142 gebruikers
The original Gmail notifier for multiple accounts. Allows you to receive new mail notifications along with viewing account details including unread messages, saved drafts, spam messages, labels with new mail, space used, and new mail snippets.
Versamelings is groepe van verwante byvoegings wat enigiemand kan bou en deel.Ontdek versamelings