| Developer | Apparat, Inc. |
|---|---|
| Working state | Historic |
| Source model | Closed source |
| Initial release | 1980 |
| Available in | English |
| Platforms | TRS-80 |
| Kernel type | Monolithic |
| Default user interface | Command-line interface |
NewDos/80 is a third-party operating system for the Radio Shack TRS-80 line of microcomputers released in 1980. NewDos/80 was developed by Apparat, Inc., of Denver, Colorado. NewDos/80 version 2.0 was released in August 1981. It ran on the TRS-80 Model I and Model III.