You wouldn't think so just from reading the bland name, but Preferences Toolbar is the best Mozilla plug-in
ever. It is also quite possibly the best web browser
plug-in ever, but I'm not an expert. As with the other best things in life
this puppy is free
Unfortunately there is also a lengthy document on this page full of important links and other HTML that you really, really want to read.
Wouldn't it be nice if all those check boxes were on a toolbar conveniently located right in front of your face at all times? Wouldn't it be great if you could also use this toolbar to spoof Mozilla's user-agent and quickly access sites too stupid to realize that Mozilla can quite easily render them? While we're fantasizing, wouldn't it be incredible if this tool bar was almost infinitely configurable with not only the ability to quickly remove and re-arrange the check boxes, buttons and drop-down menus but also the ability to create your own controls to accomplish anything you can think of with XUL and Mozilla?
You don't have to imagine any more, Preferences Toolbar does all of this and much more. If you use Mozilla you can (and should) check it out: