Extensions by Weekly Downloads

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Adblock Plus

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 (5,802)
619,881 weekly downloads

uBlock Origin Compatible with Firefox 57+ Featured

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

Rated 5 out of 5 stars (2,850)
302,703 weekly downloads

AdBlock for Firefox Compatible with Firefox 57+

The most popular ad blocker for Chrome and Safari, now available for Firefox! Block all advertisements on all web pages, even Facebook, Youtube, and Hulu. Browse faster, too! Most ads aren't even downloaded at all, saving you time and bandwidth.

Rated 4 out of 5 stars (302)
195,477 weekly downloads

Cisco WebEx Extension Compatible with Firefox 57+

Join WebEx meetings using Firefox ™

Rated 3 out of 5 stars (75)
96,019 weekly downloads

Easy Youtube Video Downloader Express Compatible with Firefox 57+

WORKS WITH NEW YOUTUBE LAYOUT, "Best Youtube Video Downloader", Only one with 1080p Full-HD and 256kbps MP3 Direct Links. A clean, fast and simple addon for superfast and easy downloads in FLV, 3GP, MP3, MP4, 720p, 1080p qualities on Youtube pages.

Rated 4 out of 5 stars (1,472)
85,634 weekly downloads

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 (2,474)
83,897 weekly downloads

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 (2,826)
71,284 weekly downloads

Video Downloader professional Compatible with Firefox 57+

- download and save videos embedded into a website to your hard disk
- add youtube, vimeo and other videos easily to your video list
- supports up to 4k videos

Rated 4 out of 5 stars (943)
66,672 weekly downloads

AdBlocker Ultimate Compatible with Firefox 57+

Free and improved ad blocker. Completely remove ALL ads. No "acceptable" ads or whitelisted advertisers, block tracking, block malware!

Rated 5 out of 5 stars (2,611)
62,862 weekly downloads

Browsec VPN

Best VPN addon for Firefox.

Rated 3 out of 5 stars (278)
52,315 weekly downloads

360 Internet Protection Compatible with Firefox 57+

This extension is web threat protection of 360 Total Security for Firefox. It identifies malicious URL in real-time and blocks web threats. The capabilities of anti-fraud, anti-phishing and anti-malicious URL will be enabled once installed.

Rated 3 out of 5 stars (94)
49,867 weekly downloads

Emoji Cheatsheet Compatible with Firefox 57+

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 (52)
47,710 weekly downloads

LanguageTool Grammar Checker Compatible with Firefox 57+

With this extension you can check text with the free style and grammar checker LanguageTool. It finds many errors that a simple spell checker cannot detect, like mixing up there/their, a/an, or repeating a word.

Rated 4 out of 5 stars (38)
44,735 weekly downloads

Download with Internet Download Manager Compatible with Firefox 57+

when activated, interrupts the built-in download manager to direct links to IDMan (Internet Download Manager)

Rated 4 out of 5 stars (178)
42,759 weekly downloads

Adguard AdBlocker Compatible with Firefox 57+

Unmatched adblock extension against advertising and pop-ups. Blocks ads on Facebook, Youtube and all other websites.

Rated 5 out of 5 stars (435)
37,379 weekly downloads

Download Youtube Video Compatible with Firefox 57+

Save video from any Youtube video in High definition HD or Standard definition SD.

1-click download any video directly from Youtube YT.

Choose if you want .mp4, .webm, mobile, or audio only (audio only saves space and great for mobile devices)

Rated 4 out of 5 stars (361)
36,634 weekly downloads

YouTube Download Plus Compatible with Firefox 57+

Download YouTube videos.

Rated 4 out of 5 stars (36)
34,378 weekly downloads

Youtube Best Video Downloader 2 - MP3 MP4 1080P Compatible with Firefox 57+

@@ Works With new YouTube Layout! @@ https://youtube.com/new/

Download every YouTube video you want and you can download them as Full-HD MP4, FLV, 3GP, MP3 128kbps and 192kbps, M4A and AAC formats. Also thumbnails and subtitles can be downloaded!

Rated 3 out of 5 stars (105)
32,074 weekly downloads

AdBlocker for YouTube™ Compatible with Firefox 57+

Removes all annoying Ads from YouTube

Rated 4 out of 5 stars (97)
28,732 weekly downloads

YouTube Flash Video Player Compatible with Firefox 57+

YouTube Flash Video Player is a powerful tool that will let you choose Flash video player as default YouTube video player.

Rated 5 out of 5 stars (93)
27,409 weekly downloads