Idris (operating system)
| Idris and the X Window System running on an Atari Mega ST | |
| Developer | P. J. Plauger (Whitesmiths) | 
|---|---|
| OS family | Unix-like | 
| Working state | Historic | 
| Initial release | 1979 | 
| Available in | English | 
| Platforms | PDP-11, VAX, Motorola 68000, System/370, Intel 8086, Atari ST, Apple Macintosh, INMOS T800 | 
| Default user interface | Command-line interface, GUI (X Window System) | 
| License | Proprietary commercial software | 
Idris is a discontinued multi-tasking, Unix-like, multi-user, real-time operating system released by Whitesmiths, of Westford, Massachusetts. The product was commercially available from 1979 through 1988.