Cloudee added some AGI downloads and forums here after agigames.com went belly up. This was a natural move since both communities stem from the old Mega Tokyo board and SCI Programming is the only remaining heir. SCI is far more active here and still have active game and tool development. However, I am unaware of any SCI IDE for the Mac. I don't know if SCI Studio or SCI Companion would run on Mac via WINE or not. Of course, there is always Parallels. In either case, PC users have to use DOSBox these days for the games too, so the target platform is moot.