Killer Extensions ++

by Phil D.

64 Add-ons in this Collection

Video DownloadHelper by mig

Rated 4 out of 5 stars 5,302 reviews

5,183,887 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 945 reviews

1,278,980 users

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

FlashGot Mass Downloader by Giorgio Maone

Rated 5 out of 5 stars 484 reviews

1,036,855 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.

iMacros for Firefox by iMacros

Rated 4 out of 5 stars 368 reviews

579,831 users

Automate Firefox. Record and replay repetitious work. If you love the Firefox web browser, but are tired of repetitive tasks like visiting the same sites every days, filling out forms, and remembering passwords, then iMacros for Firefox is the soluti...

Element Hiding Helper for Adblock Plus by Wladimir Palant

Rated 5 out of 5 stars 437 reviews

823,745 users

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

User Agent Switcher by chrispederick

Rated 4 out of 5 stars 238 reviews

398,048 users

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

Flashblock by Philip Chee

Rated 4 out of 5 stars 1,138 reviews

797,557 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...

Tab Mix Plus by onemen, Gary Reyes

Rated 4 out of 5 stars 2,490 reviews

966,322 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.

FireFTP by Mime Čuvalo

Rated 4 out of 5 stars 919 reviews

584,887 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!

Webpage Screenshot in Firefox (♥♥♥♥♥) by susbox

Rated 5 out of 5 stars 426 reviews

264,988 users

FireShot Webpage Screenshots captures pages entirely. Demo: http://bit.ly/RlBQMV

The screenshot can be quickly captured and:

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

* OS Windows only

BlockSite by Wips.com s.r.o.

Rated 3 out of 5 stars 499 reviews

214,805 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.

Xmarks Sync by Xmarks Inc.

Rated 4 out of 5 stars 2,508 reviews

335,986 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!

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

Rated 4 out of 5 stars 415 reviews

559,637 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.

Personas Plus by Mozilla

Rated 3 out of 5 stars 950 reviews

438,966 users

Personas 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 Personas.

ColorZilla by Alex Sirota

Rated 5 out of 5 stars 300 reviews

265,678 users

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