depends what you want to do..
mp3 rippers, software gadgets, curiosities, knicknacks and anything a 19 year old is apt to code in his spare time and use to pirate software abound, but hard(er) core apps for business/industry are a little lacking in the open source world, at least for windows. As a platform linux shows a little more promise in that department. What sort of stuff did you have in mind?
