> I seriously doubt there's anything in my stuff that is so proprietary that I'm afraid it will get ripped off.

It depends. Figuring out how to design a large system still takes an appreciable amount of time even if you only end up gluing a bunch of other stuff together at the end of the day. And chances are you have something original in there somewhere. If the market is particularly cutthroat it might be a bad idea to risk giving your competitors even a slight edge.

I do appreciate the sentiment of proprietary source available projects though!