Crap. I forgot that Azanor wasn't OS. I can never keep track. And you're right about COFH (although they were always notably ambivalent about people looking at their code).

But yes, that was my point. Even BC and IC2 (which, while not as prominent as they were, are still giants, with BC still being the bedrock of the modding community) are OS, IIRC (although as demonstrated by the above example, my memory isn't the best).

I mostly see mods from a user's perspective, though, because I can't actually stand Java.