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MinimizeToTray Requires Restart
Minimizes Mozilla windows into the system tray. Also includes a right clickable tray icon menu to further load only the windows you want visible...
AutoCopy Requires Restart
Select text and it's automatically copied to the clipboard. Also pastes on middle click.
SocialBlade Youtube
Social Blade Youtube - Desenvolvimento do add-on: EduRebecca
Brazilian Portuguese Dictionary (Former Spelling)
The same spellchecker shipped with the Brazilian version of Firefox, just using the former spelling (which is valid until January 1st 2016).
GenScript Search
This is an officially supported GenScript Search Add-on, provided by GenScript. The GenScript Search Add-on can enable you get access to comprehensive biology services, products, and useful bioinformatics tools much more easily and conveniently.
100 Search Engines for Firefox
Why use one search engine like Google, Yahoo, or Bing when you can have those search engines, plus piles of other search engines. Why Searchalot? Over 100 search engines for you to use to find what you are looking for on the Internet.
Proxy Tool Requires Restart
Proxy Tool - Powerful, yet User-friendly proxy tool to manage your proxies and anonymity needs, including: 46M+ user agents (world's largest), 10 different spoofed HTTP referrers, auto-proxy rotation, plus many more. Developed by http://ProxyList.co
Forecastfox Weather Requires Restart
Get international weather forecasts from AccuWeather.com and display them in any toolbar or statusbar with this highly customizable and unobtrusive extension.
www.Translate Requires Restart
Multi-Translator from Google, Bing and Pragma.
Translation tool for your Firefox and Thunderbird with a simple and friendly interface.
To create your own collections, you must have a Mozilla Add-ons account.