SheepShaver

SheepShaver is a free Macintosh PowerPC emulator written in C/C++.

Emulated hardware

 * Runs MacOS 7.5.2 thru 9.0.4. MacOS X as a guest is not supported.
 * Color video display
 * CD quality sound output
 * Access to floppy disks, CD-ROMs and HFS(+) partitions on hard disks
 * Easy file exchange with the host OS via a "Host Directory Tree" icon on the Mac desktop
 * Internet and LAN networking via Ethernet
 * Serial drivers
 * SCSI Manager (old-style) emulation

Resources

 * Website