Although you'll occasionally come across someone who uses Opera, the world of browser users consists largely of people using Internet Explorer, Firefox and Safari. However, for niche applications, fast performance, and for other reasons, many free spirits use some of the unusual open source browsers out there. Here, you'll find four of them, and what they're good at.

Datamation has a good collection of 75 Popular Open Source Desktop Downloads posted. The products in the list are categorized, and include business applications, operating systems, collaboration tools, and more. Even if you use a lot of open source applications, you'll probably find some new things to try, such as the K-Meleon and Galeon browsers. Here, below the fold, are a few more useful collections of tools and tips to try.