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by imoz

19 Add-ons in this Collection

Adblock Plus by Eyeo

Rated 5 out of 5 stars 7,508 reviews

11,904,515 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 12,496 reviews

3,288,661 users

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

NoScript Security Suite by Giorgio Maone

Rated 4 out of 5 stars 2,626 reviews

1,029,589 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, "Spectre", "Meltdown" and other JavaScript exploits.
Fx52? https://noscript.net/getit

Greasemonkey by Anthony Lieuallen

Rated 4 out of 5 stars 1,624 reviews

648,896 users

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

Firebug by Joe Hewitt, Jan Odvarko, others

Rated 4 out of 5 stars 2,669 reviews

807,960 users

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...

DownThemAll! by Nils Maier, Federico Parodi, others

Rated 4 out of 5 stars 2,815 reviews

633,699 users

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

Web Developer by chrispederick

Rated 4 out of 5 stars 486 reviews

254,446 users

The Web Developer extension adds various web developer tools to the browser.

ColorZilla by Alex Sirota

Rated 4 out of 5 stars 437 reviews

173,641 users

Advanced Eyedropper, Color Picker, Gradient Generator and other colorful goodies...

SQLite Manager by lazierthanthou

Rated 4 out of 5 stars 336 reviews

100,694 users

Manage any SQLite database on your computer.

Nightly Tester Tools by Automation Development, Henrik Skupin, others

Nightly Tester Tools (NTT) is an add-on for aiding testers of Nightly builds of Mozilla apps including Firefox.

Secure Login by Sebastian Tschan, Sarah Av.

Rated 4 out of 5 stars 377 reviews

18,757 users

Secure Login is an extension for Firefox integrated password manager.

WebExtension alternative: https://addons.mozilla.org/firefox/addon/keepasshelper/

FirePHP by cadorn

Rated 4 out of 5 stars 59 reviews

13,426 users

Log from PHP to a devtools panel.

Ubiquity by matyr

Download Now

Experimental

Rated 5 out of 5 stars 118 reviews

429 users

An extension that allows for the use of dynamic commands in Firefox.

Certificate Patrol by Carlo v. Loesch, tg(x), others

Rated 4 out of 5 stars 68 reviews

3,625 users

Your browser trusts many certification authorities and intermediate sub-authorities quietly, every time you enter an HTTPS web site. This add-on reveals when certificates are updated, so you can ensure it was a legitimate change.
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