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 The IIGS Finder running within GS/OS | |
| Developer | Apple Computer |
|---|---|
| OS family | GS/OS |
| Working state | Historic |
| Source model | Closed source |
| Initial release | 1988 |
| Latest release | GS/OS v4.02 (System Software 6.0.1) / May 6, 1993 |
| Kernel type | Monolithic kernel |
| License | Apple Software License Agreement |
GS/OS is an operating system developed by Apple Computer for its Apple IIGS personal computer. It provides facilities for accessing the file system, controlling input/output devices, loading and running program files, and a system allowing programs to handle interrupts and signals. It uses ProDOS as its primary filing system. GS/OS is a component of Apple IIGS System Software versions 4.0 through 6.0.1, and was the first true 16-bit operating system for the IIGS.