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| Developer | Charles River Data Systems |
|---|---|
| Written in | C |
| OS family | Unix-like |
| Working state | Historic |
| Final release | 9.3.3+ / July 15, 1997 |
| Marketing target | Real-time data acquiring and processing |
| Platforms | Motorola 68k, Intel 80486 |
| Kernel type | Monolithic |
UNOS is a discontinued real-time operating system (RTOS); it was the first 32-bit Unix-like system with real-time extensions.[citation needed] It was developed by Jeffery Goldberg, MS. who left Bell Labs after using Unix and became VP of engineering for Charles River Data Systems (CRDS), now defunct. UNOS was written to capitalize on the first 32-bit microprocessor, the Motorola 68k central processing unit (CPU).[citation needed] CRDS sold a UNOS based 68K system, and sold porting services and licenses to other manufacturers who had embedded CPUs.