Killer Extensions ++

by Phil D.

63 Add-ons in this Collection

Session Manager by Michael Kraft

Rated 4 out of 5 stars 509 reviews

286,406 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.

IE Tab by PCMan, yuoo2k

Rated 4 out of 5 stars 1,206 reviews

181,575 users

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

Live HTTP Headers by Daniel Savard, Nikolas Co

Rated 4 out of 5 stars 172 reviews

134,210 users

View HTTP headers of a page and while browsing.

ScrapBook by Gomita

Rated 4 out of 5 stars 883 reviews

142,408 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 331 reviews

152,921 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!

Lazarus: Form Recovery by Seth Wagoner

Rated 4 out of 5 stars 409 reviews

47,600 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.

Add to Search Bar by Dr. Evil

Rated 5 out of 5 stars 662 reviews

72,015 users

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

Showcase by Josep del Rio

Rated 4 out of 5 stars 152 reviews

23,380 users

Easily find and manage your browser tabs.

TV-FOX - Watch TV Online by TV-FOX

Rated 4 out of 5 stars 532 reviews

11,867 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...

PDF Download by Nitro PDF Software

Download Now

Experimental

Rated 2 out of 5 stars 690 reviews

64,033 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.

ChatZilla by Gijs Kruitbosch, Robert Ginda, others

Rated 4 out of 5 stars 127 reviews

113,999 users

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

Dr.Web LinkChecker by Doctor Web Anti-Virus

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 398 reviews

70,056 users

The main feature of SearchPreview is to enhance your search results pages. It inserts site preview images (thumbnails), popularity ranks and sponsored links (where available) into Google™, DuckDuckGo™, Yahoo™ and Bing™ searches.

Update Scanner by sneakypete81

Rated 4 out of 5 stars 226 reviews

25,400 users

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

Secure Login by Sebastian Tschan, Sarah Av.

Rated 4 out of 5 stars 400 reviews

42,034 users

Secure Login is an extension for Firefox integrated password manager.

For Firefox > 51, try my WebExtension implementation: https://addons.mozilla.org/en-US/firefox/addon/secure-login-webextension/
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