Berkeley Software Design
| Industry | Computer software | 
|---|---|
| Genre | Operating system software | 
| Founded | 1991 | 
| Founder | Rick Adams, Keith Bostic, Marshall Kirk McKusick, Mike Karels, Bill Jolitz | 
| Defunct | 2001/2002 | 
| Fate | Acquired | 
| Successor | Wind River Systems, iXsystems | 
| Headquarters | |
| Products | BSD/OS | 
| Website | bsdi.com at the Wayback Machine (archived 1999-04-20) | 
Berkeley Software Design, Inc. (BSDI or, later, BSDi), was a software company founded in 1991 by members of the Computer Systems Research Group (CSRG), known for developing and selling BSD/OS (originally known as BSD/386), a commercial and partially proprietary variant of the BSD Unix operating system for PCs.