Ever lost something you just typed into a web form, and wanted to get it back? Lazarus: Form Recovery, a security related add-on for Firefox, will auto-save anything you type into forms as you type. 
Have a server crash?
Did the page timeout?
Did Firefox go down an a blaze of glory? 
No matter what the problem, you can go back to the form, right-click your mouse, choose “recover form” and get your information back.
Here is a little more information [...]

Are you growing tired of having to fill out the same information over and over again? If so then the Autofill Forms extension for Firefox might be a tool you want to take advantage of.
Autofill Forms enables you to fill out web forms with one click or a keyboard shortcut. A set of customizable rules is used to determine the input for each form element. You are able to edit, remove, enable/disable the provided rules and to [...]

The other day, my sister said that the only reason she was using the Yahoo! toolbar with Firefox was for the auto-fill function that my brother-in-law liked.
At the time I did not know of a separate extension that would do the same thing. Well, I am happy to say after a little searching – I have found one.
The InFormEnter extension promises to save all of your important information so you can enter it into Web [...]

Need to add another search to your search box in Firefox – but don’t know how to create it by hand? No worries there, this should solve the problem ASAP.
The Add To Search Bar extension lets you right-click on any search box and it will give you an option to add that site’s search field to the search box. The quick 3-step process of adding a search field can be seen in the screen shot that I took above [...]

Here is a tip I found over at Lifehacker:
Drag a link or web page/tab into a text area. The URL and title of the web page/linked text will be pasted separated by a line break. Drag highlighted text – this will quickly paste whatever text you had selected into your text area.
+ Learn More About Dragging and Dropping Text into Text Areas!

The Resizeable Form Fields extension might go down as one of the best Firefox extensions to date. It looks like I am not alone, because Asa Dotzler looks to be like a big fan of it as well.
Over the last couple of years, I’ve posted the various extensions I use in Firefox. I’ve ended up with a few “critical” extensions that I simply cannot do with out. The top extension on my list was called Resizeable Text Area. This [...]

Do you want to save or load that information that you keep typing over and over into those Web site text forms? The AutoFormer extension will do the trick. Loading is automatic, saving is manual (2 mouse click). All inputs data stores into the cookies. It couldn’t get any easier.
[Learn More About AutoFormer!]

Do you often find yourself becoming frustrated at Web sites when they will not remember your passwords? The folks over at Cybernet News must feel that way as well. They have offered up a solution in the form of a bookmarklet. That is right, no extension needed for this fix.
[Tweak Firefox's Password Saver Without An Extension]