| Developer | National Research Council Canada |
|---|---|
| Written in | C, Assembly language |
| Working state | Discontinued |
| Initial release | 1985 |
| Marketing target | Research |
| Available in | English |
| Update method | Compile from source code |
| Platforms | Motorola 68000 (VMEbus, Multibus), Atari ST (520, 1040), Digital Equipment Corporation VAX |
| Kernel type | Microkernel |
| Preceded by | Thoth |
| Succeeded by | Message Queue eXecutive (MQX) |
Harmony is an experimental computer operating system (OS) developed at the National Research Council Canada in Ottawa. It is a second-generation message passing system that was also used as the basis for several research projects, including robotics sensing and graphical workstation development. Harmony was actively developed throughout the 1980s and into the mid-1990s.