Apple GS/OS

GS/OS
The IIGS Finder running within GS/OS
DeveloperApple Computer
OS familyGS/OS
Working stateHistoric
Source modelClosed source
Initial release1988; 36 years ago (1988)
Latest releaseGS/OS v4.02 (System Software 6.0.1) / May 6, 1993; 31 years ago (1993-05-06)
Kernel typeMonolithic kernel
LicenseApple 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.