Necessary and sufficient

by Simple_user

8 Add-ons in this Collection

Adblock Plus by Wladimir Palant

Rated 5 out of 5 stars 4,923 reviews

18,870,225 users

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).

Video DownloadHelper by mig

Rated 4 out of 5 stars 7,326 reviews

4,382,936 users

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

Flash Video Downloader - YouTube HD Download [4K] by Artur Dubovoy

Rated 4 out of 5 stars 773 reviews

926,152 users

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.

Awesome Screenshot Plus - Capture, Annotate & More by Diigo Inc.

Rated 4 out of 5 stars 1,378 reviews

389,125 users

Capture the whole page or any portion, annotate it with rectangles, circles, arrows, lines and text, blur sensitive info, one-click upload to share. And more!

NoScript Security Suite by Giorgio Maone

Rated 5 out of 5 stars 1,607 reviews

2,075,754 users

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.

Tab Mix Plus by onemen, Gary Reyes

Rated 4 out of 5 stars 2,627 reviews

736,453 users

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.

Session Manager by Michael Kraft

Rated 4 out of 5 stars 496 reviews

273,101 users

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.

UnMHT by arai_a

Rated 4 out of 5 stars 229 reviews

86,067 users

UnMHT allows you to view MHT (MHTML) web archive format files, and save complete web pages, including text and graphics, into a single MHT file in Firefox/SeaMonkey.

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