SheepShaver is no longer under active development, however it still receives minor bug fixes every so often.

While adding MMU emulation has been discussed, the feature has not been added because of the effort required in implementing it, the impact on performance it will have and the lack of time on the part of the developers. It is capable of running Mac OS 7.5.2 through 9.0.4 (though it needs the image of an Old World ROM to run Mac OS 8.1 or below ), and can be run inside a window so that the user can run classic Mac OS applications and BeOS or Linux or Windows applications at the same time.Īlthough SheepShaver does have Ethernet support and CD-quality sound output, it does not emulate the memory management unit. SheepShaver has also been ported to Microsoft Windows. It can be run on both PowerPC and x86 systems however, it runs more slowly on an x86 system than on a PowerPC system, because of the translation between the PowerPC and Intel x86 instruction sets. Builds of SheepShaver are available for Mac OS X, Windows and Linux. Using SheepShaver (along with the appropriate ROM image) it is possible to emulate a PowerPC Macintosh computer capable of running Mac OS 7.5.2 through 9.0.4. SheepShaver was originally commercial software when first released in 1998, but after the demise of Be Inc., the maker of BeOS, it became open source in 2002. SheepShaver is an open source PowerPC Apple Macintosh emulator. However, the main developer behind SheepShaver, of late, has been Gwenolé Beauchesne.

The ShapeShifter and SheepShaver projects were originally conceived and programmed by Christian Bauer. The name is a play on ShapeShifter, a Macintosh II emulator for AmigaOS (made obsolete by Basilisk II), which is in turn not to be confused with a third-party preference pane for Mac OS X with the same name. SheepShaver is an open source PowerPC Apple Macintosh emulator originally designed for BeOS and Linux.

Sheepshaver running Mac OS 9 on Mac OS X v10.5

Sheepshaver for windows