Most Popular Extensions

Teken in

Adblock Plus No Restart Uitgesoek

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).

Rated 5 out of 5 stars (4 816)
19 681 604 gebruikers

Video DownloadHelper No Restart

The easy way to download and convert Web videos from hundreds of YouTube-like sites.

Rated 4 out of 5 stars (6 609)
4 247 069 gebruikers

Easy Screenshot

Capture a screenshot of the whole webpage, and save in your desktop in default.

Rated 4 out of 5 stars (95)
2 403 045 gebruikers

Firebug No Restart

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 5 out of 5 stars (1 828)
2 087 963 gebruikers

NoScript Security Suite Uitgesoek

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 (1 579)
2 068 288 gebruikers

Ghostery No Restart Uitgesoek

Increase your browsing privacy, protection, and speed.

Rated 5 out of 5 stars (1 262)
1 415 029 gebruikers

Greasemonkey Uitgesoek

Customize the way a web page displays or behaves, by using small bits of JavaScript.

Rated 4 out of 5 stars (993)
1 255 466 gebruikers

DownThemAll! Uitgesoek

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

Rated 4 out of 5 stars (1 753)
1 250 775 gebruikers

uBlock Origin No Restart Uitgesoek

Finally, an efficient blocker. Easy on CPU and memory.

Rated 5 out of 5 stars (546)
1 221 528 gebruikers

Adblock Plus Pop-up Addon Uitgesoek

Adblock Plus Pop-up Addon extends the blocking functionality of Adblock Plus to those annoying pop-up windows that open on mouse clicks and other user actions.

Rated 5 out of 5 stars (198)
1 067 104 gebruikers

Download YouTube Videos as MP4 No Restart Uitgesoek

An extension that adds direct links to download YouTube videos as MP4 and FLV. It has a simple interface and it downloads videos directly from YouTube. The extension integrates with YouTube's interface and adds a download button below the player.

Rated 4 out of 5 stars (411)
1 038 822 gebruikers

Flash Video Downloader - YouTube HD Download [4K]

Flash Video Downloader helps you download any video (flv, mp4, HD) from YouTube, Facebook, Break, Metacafe and more in one click. You can download mp3, music (iPod), avi and more. Download Flash games. Download Helper. 4K download.

Rated 4 out of 5 stars (637)
1 025 846 gebruikers

Web of Trust, WOT: Website Reputation Ratings Uitgesoek

Find out which websites you can trust. WOT adds intuitive traffic light-style icons next to search results and URLs so you can decide whether to visit a site:
• Green – The site is trusted
• Yellow – Be cautious
• Red – Online threats detected

Rated 4 out of 5 stars (1 334)
887 880 gebruikers

Yahoo Toolbar

Stay on top of the information you care about with the Yahoo Toolbar. Preview your favorite sites, like Facebook, Gmail, eBay and more, from any page you’re on.

Rated 2 out of 5 stars (288)
834 313 gebruikers

Tab Mix Plus Uitgesoek

Tab Mix Plus enhances Firefox's tab browsing capabilities. It includes such features as duplicating tabs, controlling tab focus, tab clicking options, undo closed tabs and windows, plus much more. It also includes a full-featured session manager.

Rated 4 out of 5 stars (2 599)
803 106 gebruikers

FlashGot Mass Downloader Uitgesoek

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.

Rated 5 out of 5 stars (533)
801 105 gebruikers

Google Translator for Firefox Uitgesoek

With this addon you can translate any text to your own language with one click or hot-key. You can either translate the selected text, this way the translated text will overwrite the original selected text, or you can translate the full page too.

Rated 4 out of 5 stars (340)
763 037 gebruikers

LastPass Password Manager

LastPass, an award-winning password manager, saves your passwords and gives you secure access from every computer and mobile device.

Rated 4 out of 5 stars (1 348)
723 619 gebruikers

YouTube Video and Audio Downloader No Restart

Downloads YouTube videos in all available formats (FLV, MP4, WebM, and 3GP) with video quality of your choice. It also contains a pure JavaScript library to extract the ORIGINAL audio file embedded in video files.

Rated 4 out of 5 stars (327)
701 227 gebruikers

1-Click YouTube Video Download

The simplest YouTube Video Downloader for all YouTube Flash sites, period.

Rated 4 out of 5 stars (529)
665 225 gebruikers