Here is a small list of Extensions that I use most often with Firefox.
* Disable targets for downloads — This one will prevent Firefox from opening up a new window or tab when you click on a file to download
* Optimoz — Mouse Gestures. I absolutely can’t live without this one. It;s always the first one I install.
* AdBlock Plus — Bye Bye adverts!
* Linkification — Automatically converts plain text URL’s to clickable URL’s
* Paste and Go — Used in conjunction with Optimize and Tabs, simply copy a URL and create a new tab and voila.
* Colorful Tabs - Coloring every tab with a different color
* Bookmark Synchronizer
* IE Switch (switch pages to display using the IE engine (useful for testing))
* SessionSaver: This one is a life saver.
Please share your thoughts and your favorite extensions