Special Real Time Operating System
| Company type | Software |
|---|---|
| Industry | Computer software, Industrial process control |
| Founded | 1976 |
| Founder | IBM |
| Products | Real-time operating system |
| Parent | IBM |
Special Real Time Operating System (SRTOS) was an IBM-developed real time operating system originally designed for the electricity industry before being adapted for broader industrial process control purposes. It played a key role in IBM's Realtime Plant Management System (RPMS) and Advanced Control System (ACS). Unlike a traditional standalone operating system, SRTOS operated as an add-on to the OS/VS1 and OS/VS2 platforms, which were later succeeded by MVS. Additionally, it was utilized within the paper manufacturing sector. First introduced in 1976, SRTOS is no longer marketed or supported as a product; however, it continues to function in various ACS and RPMS environments globally.