Free useful firefox software for windows

Useful Stuff 123 Toolbar is a free toolbar from Useful Stuff 123.
Main features:
- A pop-up blocker,
- Search box, with highlighting facilites,
- A Timer, so you can tell how long youve had the browser open,
- Local Weather,
- A Message Center, where you can hear about all the news from the website,
- The websites own chat room only accessible from the toolbar,
- Uplifting sayings, changed every day

Sothink SWF Catcher for Firefox is a free and useful Firefox extension that enables you to catch Flash movies (*.swf) from Web pages in Firefox browser and save them into your local folder.

WareSeeker Editor

One Password To Rule Them All!
If youre like most people, you have a few passwords that you use over and over again on many different websites. You know this isnt secure, but you do it anyway. Why? Because its difficult to remember a unique password for each and every web site that requires one.
PasswordMaker is a useful Firefox extension that manages all your online accounts using either new, uncrackable passwords it creates, or your existing passwords. It even automatically populates webforms for one-click login.
Moreover, passwords arent stored anywhere--they are calculated over and over again as theyre needed--so theres nothing to be lost, hacked, or stolen!

Update Notifier is a useful Firefox and Thunderbird extension that notifies you when updates are availabe for your extensions and themes. Allows quick access to your extensions and themes and the ability to check both types for any updates.
Easily configurable for automatically installing updates when available and checking for updates when Firefox starts.