Add-ons

DownThemAll! by Nils Maier, Federico Parodi, others

The first and only download manager/accelerator built inside Firefox!

FireFTP by Mime Čuvalo

FireFTP is a free, secure, cross-platform FTP/SFTP client for Waterfox which provides easy and intuitive access to FTP/SFTP servers.

Check out my new project, FireSSH!

Speed Dial by Josep del Rio

Direct access to your most visited websites

DownThemAll! AntiContainer by Nils Maier

Make the resources behind container pages easily downloadable by DownThemAll!

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.

Notepad (QuickFox) by InBasic, J Benthum

Everyday note-taking solution.

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.

Collector's Note 自动加载下一页，大大减少鼠标工作量，强烈推荐

Foobar Controls by Ben Basson

Allows you to control the Foobar2000 Mp3 player from the Firefox window...

CleanHide by Peter Pan, 21690191

if you find some web page use Hidden Text insert in normal articles,try this.

Custom Buttons² by SCClockDr, nicholasalipaz, others

The Custom Buttons² Firefox extension provides the code base support necessary to create, maintain, import, and export custom toolbar buttons. The buttons can perform just about any task, with a large number of buttons already available on the exte...