Multi-platform
- ATBBS – PHP-based BBS software.
- BBBS
- Citadel
- CONFER – CONFER II on MTS, CONFER U on Unix, written by Robert Parnes starting in 1975.
- EleBBS
- IN-MENU – written in Borland Pascal 7.0 by Viktor Nozhnov. Running on MS-DOS and All Windows.
- PortaCOM
- Synchronet
- Virtual Advanced, also known as VBBS
- Mystic BBS – written by James Coyle with versions for DOS, Windows, OS/2, Linux, and Mac OSX although only Windows, OSX, and Linux in recent versions.
Read more about this topic: List Of BBS Software