Mozilla Firefox and Thunderbird Add-ons

by David July

33 Add-ons in this Collection

Adblock Plus by Wladimir Palant

Rated 5 out of 5 stars 4,986 reviews

21,458,316 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).
Collector's Note Switched to "uBlock Origin"

Download YouTube Videos as MP4 by ialc

Rated 4 out of 5 stars 371 reviews

1,015,129 users

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.

uBlock Origin by Raymond Hill

Rated 5 out of 5 stars 309 reviews

558,223 users

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

DownThemAll! by Nils Maier, Federico Parodi, others

Rated 5 out of 5 stars 1,625 reviews

1,354,285 users

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

NoScript Security Suite by Giorgio Maone

Rated 5 out of 5 stars 1,509 reviews

2,327,594 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.

Stylish by Jason Barnabe

Rated 4 out of 5 stars 763 reviews

654,579 users

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.

HTTPS Everywhere by EFF Technologists

Rated 5 out of 5 stars 43 reviews

95,926 users

Encrypt the web! HTTPS Everywhere is a Firefox extension to protect your communications by enabling HTTPS encryption automatically on sites that are known to support it, even when you type URLs or follow links that omit the https: prefix.

Tab Mix Plus by onemen, Gary Reyes

Rated 4 out of 5 stars 2,547 reviews

910,416 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.

Flagfox by Dave G

Rated 5 out of 5 stars 636 reviews

596,172 users

Displays a country flag depicting the location of the current website's server and provides a multitude of tools such as site safety checks, whois, translation, similar sites, validation, URL shortening, and more...

Classic Theme Restorer by Aris

Rated 5 out of 5 stars 1,002 reviews

449,286 users

Squared tabs, appmenu, add-on bar, small button view and many more 'old' features for Firefox 29+ (Windows / MacOSX / Linux).

All builds & changelogs on versions page!

Self-Destructing Cookies by Ove

Rated 4 out of 5 stars 438 reviews

185,276 users

Fix the web. Gets rid of a site's cookies and LocalStorage as soon as you close its tabs. Protects against trackers and zombie-cookies. Trustworthy services can be whitelisted.

Screengrab (fix version) by Oleksandr

Rated 5 out of 5 stars 266 reviews

142,094 users

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

Download Manager (S3) by Oleksandr

Rated 5 out of 5 stars 262 reviews

113,851 users

View and manage downloads from a tidy statusbar

This is a new life in Firefox 26+ for old well-known addon Download Statusbar

New Features: Replace Downloads Library page.
Now you have full control of your downloads history!

ScrapBook by Gomita

Rated 4 out of 5 stars 855 reviews

166,497 users

Helps you to save Web pages and organize the collection.

UnMHT by arai_a

Rated 5 out of 5 stars 220 reviews

85,424 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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