Remember the iPhone is, inside, a Darwin system. Put a terminal, and the sky is the limit. Plus, there is always an API. The API, in the first days, wasn't publ

Remember the iPhone is, inside, a Darwin system. Put a terminal, and the sky is the limit. Plus, there is always an API. The API, in the first days, wasn't public, but it was there. The base apps included (calendar, browser, etc) needed it. And there was an app store (well, a fully free store) before Apple even released their APIs. I don't know how people discovered the APIs (reverse-engineering ? Leaks from Apple ?), but they had them.