In late 2003, at a coffee shop in Palo Alto, Calif., three friends weary of work at big Silicon Valley companies decided to create an email program. In a weekend they cobbled together a simple prototype. They combed the Web for free software, and in a few months they had assembled more than 40 blocks of free programming into a basic system.
http://rudra7.blogspot.com/2006/11/open ... imbra.html
This article doesn't cover Scalix. Any ideas why??!?