Hans de Goede has released an emulator for PS3 Linux:

SheepShaver is a MacOS run-time environment that allows you to run classic MacOS applications. This means that both Linux and MacOS applications can run at the same time (usually in a window on the Linux desktop). If you are using a PowerPC-based system, applications will run at native speed (i.e. with no emulation involved). There is also a built-in PowerPC G4 emulator, without MMU support, for non-PowerPC systems. Available rebuild options : --without : mon --with : sdl

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