zymano writes "OSnews has some information about Opencroquet, a 3d operating system worked on by Alan Kay, who also is one of the inventors of Smalltalk, one of the fathers of object oriented programming, conceiver of the laptop computer, inventor of much of the modern windowing GUI. The OS is a 3D environment running through the Squeak environment on top of another operating system. It requires a supported 3D accelerator. Squeak is an interpreted language similar to Smalltalk. Could be ssslooooww. Way cool screenshot."