Killer Extensions ++

by Phil D.

64 Add-ons in this Collection

Personas Plus by Mozilla

Rated 3 out of 5 stars 950 reviews

478,455 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.

Session Manager by Michael Kraft

Rated 4 out of 5 stars 537 reviews

285,096 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.

PDF Download by Nitro PDF Software

Rated 2 out of 5 stars 677 reviews

153,968 users

Use PDF Download to do whatever you like with PDF files on the Web. Regain control and eliminate browser problems, view PDFs directly in Firefox as HTML, and use the all-new Web-to-PDF toolbar to save and share Web pages as high-quality PDF files.

Live HTTP Headers by Daniel Savard, Nikolas Co

Rated 4 out of 5 stars 153 reviews

189,302 users

View HTTP headers of a page and while browsing.

IE Tab by PCMan, yuoo2k

IE Tab - an extension from Taiwan, features: Embedding Internet Explorer in tabs of Mozilla/Firefox...

ScrapBook by Gomita

Rated 4 out of 5 stars 831 reviews

183,246 users

Helps you to save Web pages and organize the collection.

Mozilla Archive Format, with MHT and Faithful Save by Christopher Ottley, Paolo Amadini

Rated 4 out of 5 stars 242 reviews

200,743 users

— Open web pages saved with Internet Explorer or other browsers (MHT)
— Save many tabs, video and audio reliably, in a single ZIP file (MAFF)
— Return to the original site you saved a page from, and more!

ChatZilla by Gijs Kruitbosch, Robert Ginda, others

Rated 4 out of 5 stars 124 reviews

164,741 users

A clean, easy to use and highly extensible Internet Relay Chat (IRC) client.

Lazarus: Form Recovery by Seth Wagoner

Rated 4 out of 5 stars 343 reviews

54,118 users

Never lose anything you type into a web form again! Lazarus securely auto-saves all forms as you type, so after a crash, server timeout, or whatever, you can go back to the form, right click, "recover form", and breathe a sigh of relief.

TV-FOX - Watch TV Online by TV-FOX

Rated 4 out of 5 stars 509 reviews

22,565 users

TV Add-on for Firefox - Watch TV directly from your Firefox Browser, 2780 Live TV Channels sorted by country & category, the TV-FOX allow you to watch thousands of TV channels freely available on the internet. powered by the biggest and most up t...

Dr.Web LinkChecker by Doctor Web Anti-Virus

Rated 4 out of 5 stars 91 reviews

50,699 users

This plugin allows you to check any file you are about to download, any page you are about to visit with online version of Dr.Web anti-virus.

SearchPreview by Edward Ackroyd

Rated 4 out of 5 stars 381 reviews

113,630 users

The extension previously known as GooglePreview. Inserts preview images (thumbnails) and popularity ranks of web sites into the Google, Yahoo, Bing and DuckDuckGo search results pages.

StumbleUpon by StumbleUpon

Rated 4 out of 5 stars 213 reviews

139,769 users

StumbleUpon is the easiest way to discover new and interesting photos, videos, web pages and more, recommended by a community of experts. Tell us what you are interested in and we recommend page after page of amazing stuff you’d never expect to see.

Add to Search Bar by Dr. Evil

Rated 5 out of 5 stars 588 reviews

97,037 users

Make any pages' search functionality available in the Search Bar (or "search box")...

Update Scanner by sneakypete81

Rated 4 out of 5 stars 185 reviews

34,881 users

Monitors web pages for updates. Useful for websites that don't provide Atom or RSS feeds.
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