Open source. Under active development.

pTOS — Portable TOS

Classic roots.
New horizons.

pTOS is a portable, open-source, TOS-compatible operating system derived from EmuTOS. It preserves the familiar GEM environment while extending the architecture beyond classic Atari hardware, targeting m68k, ARM and x86-64 systems.

The project is under active development.

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pTerry, an orange pterodactyl with one wing raised and a skeptical expression, saying ‘I’m not a dinosaur.’ — A little prehistoric. A lot of possibility.

The direction

Familiar foundations.
Room to explore.

Classic GEM at heart. A shared, portable architecture ahead. Work spans m68k, ARM and x86-64; support varies by target, and ports and subsystems are still evolving.

m68k ARM x86-64

pTOS — Portable TOS

Familiar foundations.Room to explore.

Familiar foundations.
Room to explore.