Coherent (operating system)
Coherent 4.2.10 installer | |
| Developer | Mark Williams Company |
|---|---|
| OS family | Unix-like |
| Working state | Discontinued |
| Source model | Closed source; open sourced in 2015 |
| Initial release | 1980 |
| Latest release | 4.2.14 / 1994 |
| Available in | English |
| Platforms | PDP-11, x86 (8088, 286, 386, 486), Motorola 68000, Zilog Z8000 |
| Kernel type | Monolithic |
| Default user interface | Command-line (KornShell) |
| License | 2015: BSD-3-Clause Original: Proprietary |
Coherent is a clone of the Unix operating system for IBM PC compatibles and other microcomputers, developed and sold by the now-defunct Mark Williams Company (MWC). Historically, the operating system was a proprietary product, but it became open source in 2015, released under the BSD-3-Clause license.