Reviews and free downloads at Download.com

Reviews and free downloads at Download.com

When you ask most people what Web browser they use, the answer often will be Internet Explorer. After all, it comes preloaded on Windows PCs, so most people just use it by default. But while IE maintains a stranglehold on the majority of computer systems, Mozilla's open-source solution, called Firefox, has made significant inroads into the browser market. Handy extra features are part of the reason for its growing success, as is the continual supply of third-party add-ons.

Recently, the folks at Mozilla started a contest offering prizes to developers who come up with the best Firefox extensions. To get more people involved, we put together a list of our favorite existing add-ons. If you've made the jump to Firefox, check out some of these superuseful extensions--and if you haven't, this collection may twist your arm. Developers who want to see if they have what it takes should head over to the Extend Firefox Contest.