That's right folks, another ten best! But this time I'll wager you're not familiar with any of them, or at best one or two. The free/open source software world is vast and full of excellent applications for all occasions. An interesting trend is the growth of large distributed projects such as OpenTox and AMEE. FOSS presents a natural platform for building large distributed projects because of the low barrier to entry-- open code, open standards, and freely-available robust, high-quality high-performance software.And now I shall cease nattering, and invite you to enjoy the following best unknown open source software projects.