Add-ons

MinimizeToTray revived by Nils Maier

Minimizes windows into the system tray.

DownThemAll! AntiContainer by Nils Maier

Make the resources behind container pages easily downloadable by DownThemAll!

Torrent Tornado by Oleksandr

A Torrent Client for Firefox and SeaMonkey, runs everywhere, created in pure JavaScript without binary software!

Scriptish by Erik Vold, Nils Maier, others

The greatest user script engine on the Internet (a fork of Greasemonkey).

AutoPager by Wind Li

AutoPager automatically loads next pages when you reach the end of a page. It works on a ton of sites,Google,Yahoo..
It works well with most other add-ons adblock plus, WOT and most of the greasemonkey scripts.
You can also try AutoPagerLite.

Unlimited Blade Works by TakuEmiya

THE IDOLMASTER ALLSTARS by yukiho81

Saber Lily by jBieniu

Cirno the Nine by TSzivos

Touhou - Flandre Scarlet by HarmfulGravemind

Boku ha tomodachi ga sukunai by yukiho81

Cirno Touhou by Guinsilva by Guinsilva

Is that so by Xarc37

fate natsu by cacaolate

Shingetsutan_tsukihime_1 by 3w.todd