Mozilla Firefox and Thunderbird Add-ons

by David July

30 Add-ons in this Collection

uBlock Origin by Raymond Hill

Rated 5 out of 5 stars 1,506 reviews

3,919,238 users

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

Download YouTube Videos as MP4 by ialc

Rated 4 out of 5 stars 488 reviews

1,066,328 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.

DownThemAll! by Nils Maier, Federico Parodi, others

Rated 4 out of 5 stars 1,756 reviews

1,171,980 users

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

NoScript Security Suite by Giorgio Maone

Rated 5 out of 5 stars 1,559 reviews

2,313,895 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.

HTTPS Everywhere by EFF Technologists

Rated 4 out of 5 stars 166 reviews

390,930 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.

Stylish by userstyles.org

Rated 4 out of 5 stars 817 reviews

420,076 users

Restyle the web with Stylish, a user styles manager. Stylish lets you easily install themes and skins for Google, Facebook, YouTube, Tumblr, and many, many other sites. You can even customize Firefox and other programs themselves.

Tab Mix Plus by onemen, Gary Reyes

Rated 4 out of 5 stars 2,396 reviews

727,800 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.

Self-Destructing Cookies by Ove

Rated 4 out of 5 stars 552 reviews

206,831 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.

Flagfox by Dave G

Rated 5 out of 5 stars 665 reviews

434,537 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 1,049 reviews

402,368 users

Squared tabs, appmenu, add-on bar, small button view and many more 'old' features for Firefox 29-56 (Windows / MacOSX / Linux).

Release builds
Beta builds

TT DeepDark by steva

Rated 5 out of 5 stars 158 reviews

51,924 users

Collector's Note Thunderbird

Download Manager (S3) by Oleksandr

Rated 5 out of 5 stars 234 reviews

87,387 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!

Screengrab (fix version) by Oleksandr

Rated 5 out of 5 stars 250 reviews

124,123 users

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

ScrapBook by Gomita

Rated 4 out of 5 stars 771 reviews

137,760 users

Helps you to save Web pages and organize the collection.

UnMHT by arai_a

Rated 4 out of 5 stars 234 reviews

102,191 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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