Seven Open Source Business Strategies
Openstandards.net writes "One of /. posters' favorite discussions is the value of open source as a business model. OSDN has an article on IT Manager's Journal that highlights seven business strategies for open source. " Slashdot and ITMJ are both owned by OSDN.
Cygnus primarily provided support, but I think they also did some development. Maybe someone can elaborate?
In my mind, Cygnus is a good example of how a small company can survive on just dealing in Free Software. Many people need support, or perhaps need custom-made changes to Free Software.
AFAIK, Cygnus is now part of Red Hat, and Michael Tiemann is CTO of Red Hat.