| Developer | BBN |
|---|---|
| Written in | Assembly language |
| Working state | Historic |
| Initial release | 1969 |
| Marketing target | Mainframe computers |
| Platforms | PDP-10 |
| Influenced by | TOPS-10 |
| Default user interface | Command-line interface |
| License | Proprietary |
| Succeeded by | TOPS-20 |
TENEX is an operating system developed in 1969 by BBN for the PDP-10, which later formed the basis for Digital Equipment Corporation's TOPS-20 operating system.