DOS XL
| DOS XL | |
|---|---|
| Original author(s) | Paul Laughton Mark Rose Bill Wilkinson Mike Peters | 
| Developer(s) | Optimized Systems Software | 
| Final release | 2.30
   / 1984 | 
| Platform | Atari 8-bit | 
| Type | Atari DOS | 
| License | Proprietary software | 
DOS XL is a discontinued Disk Operating System (DOS) written by Paul Laughton, Mark Rose, Bill Wilkinson, and Mike Peters and published by Optimized Systems Software (OSS) for the Atari 8-bit computers. It was designed to be compatible with Atari DOS which shipped with Atari, Inc.'s disk drives, which had also been written by the same team.