Killer Extensions ++

by Phil D.

61 Add-ons in this Collection

Video DownloadHelper by mig

Rated 4 out of 5 stars 8,227 reviews

3,611,504 users

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

Greasemonkey by Anthony Lieuallen, Aaron Boodman, others

Rated 4 out of 5 stars 1,156 reviews

888,773 users

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

iMacros for Firefox by Ipswitch, Inc.

Rated 4 out of 5 stars 526 reviews

1,334,594 users

Automate Firefox. Record and replay repetitive tasks. If you're tired of manually visiting the same sites, filling out forms, downloading files and extracting data, then iMacros is for you! Save time, effort and money with iMacros browser automation!

FlashGot Mass Downloader by Giorgio Maone

Rated 5 out of 5 stars 547 reviews

489,968 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.

Tab Mix Plus by onemen, Gary Reyes

Rated 4 out of 5 stars 2,419 reviews

581,787 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.

Full Web Page Screenshots (♥♥♥♥♥) by susbox

FireShot makes full web page screenshots. Demo: http://bit.ly/RlBQMV

Screenshots can be quickly captured and:

― Saved as Image or PDF
― Sent to clipboard
― Printed
― Annotated *
― Uploaded *
― E-Mailed *

* OS Windows only

User Agent Switcher by chrispederick

Rated 4 out of 5 stars 276 reviews

221,985 users

The User Agent Switcher extension adds a menu and a toolbar button to switch the user agent of a browser.

Element Hiding Helper for Adblock Plus by Wladimir Palant

Rated 5 out of 5 stars 434 reviews

353,280 users

Fight the text ads! Element Hiding Helper is a companion extension for Adblock Plus meant to make creating element hiding rules easier.

FireFTP by Mime Čuvalo

Rated 4 out of 5 stars 946 reviews

316,568 users

FireFTP is a free, secure, cross-platform FTP/SFTP client for Mozilla Firefox which provides easy and intuitive access to FTP/SFTP servers.

Check out my new project, FireSSH!

Session Manager by Michael Kraft

Rated 4 out of 5 stars 473 reviews

235,251 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.

BlockSite by Wips.com s.r.o.

Rated 3 out of 5 stars 551 reviews

128,883 users

BlockSite is an extension, which automagically blocks websites of your choice. Additionally, this extension will disable all hyperlinks to these websites, by just displaying the link text without the clicking functionality.

Flashblock by Philip Chee

Rated 4 out of 5 stars 1,142 reviews

296,068 users

Never be annoyed by a Flash animation again! Blocks Flash so it won't get in your way, but if you want to see it, just click on...

ColorZilla by Alex Sirota

Rated 4 out of 5 stars 384 reviews

171,915 users

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

Xmarks Sync by Xmarks Inc.

Rated 4 out of 5 stars 2,527 reviews

182,020 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!

Personas Plus by Mozilla

Rated 3 out of 5 stars 854 reviews

172,114 users

Personas (now known as lightweight themes) are free, easy-to-install "skins" for Firefox. Personas Plus extends that built-in functionality to give you even more control and easier access to new, popular, and your own favorite themes.
  1. 1
  2. 2
  3. 3
  4. 4
  5. 5
Results 115 of 61

What are Collections?

Collections are groups of related add-ons that anyone can create and share.

Explore Collections

More by this User

See all collections by this user