Add-ons

NetVideoHunter by netvideohunter

This add-on is a downloader that lets you easily download videos from sites like Youtube, Facebook, Metacafe, Dailymotion, Break, VKontakte and music for example from SoundCloud, Grooveshark and from many other sites...

ReminderFox by Tom Mutdosch, Daniel Lee, others

ReminderFox displays and manages lists of reminders and tasks. ReminderFox uses easy-to-use lists with warnings/alarms to remind you of all your important appointments.
Synchronize ReminderFox with other calendars as well.

Thumbnail Zoom Plus by David Adler

Shows full image when you hover over a thumbnail. Works with Amazon, Baidu Images, Bing Images, Facebook, Flickr, Google+, Google Images, IMDb, LinkedIn, Netflix, Pinterest, Reddit, Twitter, Yandex, YouTube, Wikipedia, Yahoo Images, & many more.

Private Tab by Infocatcher

Adds private tabs.

MailHops by Andrew Van Tassel

MailHops maps the route an email took to get to you. Displaying the senders location, weather, user-agent and authentication used.

Firefox global animated by Bátja ⃰ ⃰ ⃰ ®

Thunderbird Brown by tdjunkie

designyellow by stratify

Flat Fox 2 by Leonardo

Wrinkly Peach by Joey Twiddle

Simple Turquoise by Sinine

Firefox Aero by Sinine

Firefox Dev Blue Binary by MandyLaila

Glass - Human by jmouse888

OnlyBirdAndFox by jkzabel