Para os mais incrédulos, que não acreditam que é possível ganhar dinheiro como modelos de negócios baseados em Open Source... Aqui fica o Top 5...

"The art of “selling” or generating revenue from open source is a topic of growing importance as open source takes a larger piece of the software business. In the past, open source revenue has largely been associated with services marketed by many top tier Linux companies: Support, middleware solutions, etc." [Hartley 2007]

1) Selling Open Source Software
2) Selling Open source software how-to videos
3) Provide Open source services to small businesses
4) Coding local applications to sell products for you
5) The Web-based Advertising model

Mais detalhes em: (Top 5 explicado exaustivamente)

[Hartley 2007] Hartley, Math,"Top Five Open Source Business Models You Never Heard", ItMangement, July, 2007 - (5/7/07)