HP Multi-Programming Executive
| Developer | Hewlett-Packard | 
|---|---|
| Written in | System Programming Language, HP Pascal, Assembly language | 
| Working state | Discontinued | 
| Initial release | 1974 | 
| Latest release | 7.5 / August 2002 | 
| Platforms | HP 3000 | 
| Default user interface | Command-line interface | 
| License | Proprietary | 
MPE (Multi-Programming Executive) is a discontinued business-oriented mainframe computer real-time operating system developed by Hewlett-Packard for their HP 3000 computers. While the HP 3000s were initially mini-mainframes, the final high-end systems supported 12 CPUs and over 2000 simultaneous users.