My Favorite Add-ons

by Matt Kan

30 Add-ons in this Collection

Greasemonkey by Anthony Lieuallen, Aaron Boodman, others

Rated 4 out of 5 stars 1,159 reviews

855,596 users

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

DownThemAll! by Nils Maier, Federico Parodi, others

Rated 4 out of 5 stars 1,807 reviews

910,521 users

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

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

Rated 4 out of 5 stars 1,569 reviews

404,371 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!

Firebug by Joe Hewitt, Jan Odvarko, others

Rated 4 out of 5 stars 2,109 reviews

1,299,014 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...

FlashGot Mass Downloader by Giorgio Maone

Rated 5 out of 5 stars 548 reviews

472,279 users

Download all the links, movies and audio clips of a page at the maximum speed with a single click, using the most popular, lightweight and reliable external download managers.

Flagfox by Dave G

Rated 5 out of 5 stars 671 reviews

327,419 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...

Web Developer by chrispederick

Rated 5 out of 5 stars 273 reviews

277,886 users

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

Web of Trust, MyWOT/WOT: Website Reputation Rating by WOT Services

Rated 4 out of 5 stars 1,341 reviews

303,444 users

Instantly know which websites to trust! WOT protects you while you browse, warning you against dangerous sites that host malware, phishing, and more.

ColorZilla by Alex Sirota

Rated 4 out of 5 stars 384 reviews

159,966 users

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

Xmarks Sync by Xmarks Inc.

Rated 4 out of 5 stars 2,529 reviews

174,148 users

Xmarks is the #1 bookmarking and open tab add-on. Keep your bookmarks, and open tabs backed up and synchronized across computers and browsers. Mobile phones with Premium access. Utilize LastPass to sync passwords!

DownThemAll! AntiContainer by Nils Maier

Rated 5 out of 5 stars 31 reviews

52,330 users

Make the resources behind container pages easily downloadable by DownThemAll!

IE Tab V2 (Enhanced IE Tab) by ietab.net

Rated 4 out of 5 stars 436 reviews

182,788 users

Note: If you are encountering the Connecting... problem see instructions below.

The updated, fully supported IE Tab. Embed IE in a Firefox tab. IE Tab Features: FF 4+ support, IE 7-9 compatibility modes, old IE Tab settings import.

MeasureIt by Kevin Freitas

Rated 4 out of 5 stars 362 reviews

88,159 users

Draw a ruler across any webpage to check the width, height, or alignment of page elements in pixels.

FEBE by Chuck_Baker

Rated 4 out of 5 stars 625 reviews

64,463 users

FEBE (Firefox Environment Backup Extension) allows you to quickly and easily backup your Firefox extensions. In fact, it goes beyond just backing up -- It will actually rebuild your extensions individually into installable .xpi files.

Thumbnail Zoom Plus by David Adler

Rated 4 out of 5 stars 329 reviews

70,162 users

Shows full image when you hover over a thumbnail. Works with Amazon, Baidu Images, Bing Images, Facebook, Flickr, Google+, Google Images, IMDb, LinkedIn, Netflix, Pinterest, Reddit, Twitter, Yandex, YouTube, Wikipedia, Yahoo Images, & many more.
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