TOPS-10
| Developer | Digital Equipment Corporation | 
|---|---|
| Written in | MACRO-10, BLISS | 
| Working state | Discontinued | 
| Initial release | 1970 | 
| Latest release | 7.04 / July 1988 | 
| Available in | English | 
| Platforms | PDP-10 | 
| Default user interface | Command-line interface | 
| License | Proprietary Free for personal use | 
TOPS-10 System (Timesharing / Total Operating System-10) is a discontinued operating system from Digital Equipment Corporation (DEC) for the PDP-10 (or DECsystem-10) mainframe computer family. Launched in 1967, TOPS-10 evolved from the earlier "Monitor" software for the PDP-6 and PDP-10 computers; this was renamed to TOPS-10 in 1970.