Archived
GM 8.x
GM for Mac OS X
GameMaker Studio 2
GMS 2.x IDE (Windows/Mac)
GMS 2.x runtime
GameMaker Studio 1.x
GM:Studio 1.4.x Stable
GM:Studio 1.4.x Beta
GM:Studio 1.4.x EAP
(Runtime - a tool used by IDE to compile a game. May be released independently to only fix bugs in compiled games.)
Current version is 2.2.5.377. Released 12/12/2019, 1 year, 4 months, 7 days ago