List of BBS software
This is a list of notable bulletin board system (BBS) software packages. Multi-platform 
 Citadel – originally written for the CP/M operating system, had many forks for different systems under different names. CONFER – CONFER II on the MTS, CONFER U on Unix and CONFER V on VAX/VMS, written by Robert Parnes starting in 1975. Mystic BBS – written by James Coyle with versions for Windows/Linux/ARM Linux/OSX. Past versions: MS-DOS and OS/2. Synchronet – Windows/Linux/BSD, past versions: MS-DOS and OS/2. WWIV – WWIV v5.x is supported on both Windows 7+ 32bit as well as Linux 32bit and 64bit. Written by Wayne Bell, included WWIVNet. Past versions: MS-DOS and OS/2. Altos 68000 
 PicoSpan

Amiga based 
 Ami-Express – aka "/X", very popular in the crackers/warez software scene. C-Net – aka "Cnet"

Apple II series 
 Diversi-Dial (DDial) – Chat-room atmosphere supporting up to 7 incoming lines allowing links to other DDial boards. GBBS – Applesoft and assembler-based BBS program by Greg Schaeffer. GBBS Pro – based on the ACOS or MACOS (modified ACOS) language. Net-Works II – by Nick Naimo. SBBS – Sonic BBS by Patrick Sonnek. Apple Macintosh 
 Citadel – including Macadel, MacCitadel. FirstClass (SoftArc)
 Hermes
 Second Sight
 TeleFinder

Atari 8-bit computer 
 Atari Message Information System – and derivatives

Commodore computers 
 Blue Board – by Martin Sikes. Superboard – by Greg Francis and Randy Schnedler. C*Base – by Gunther Birznieks, Jerome P. Yoner, and David Weinehall. C-Net DS2 – by Jim Selleck. Color64 – by Greg Pfountz. McBBS – by Derek E. McDonald. CP/M 
 CBBS – The first ever BBS software, written by Ward Christensen. Citadel
 RBBS
 TBBS

Microsoft Windows 
 Excalibur BBS
 Maximus
Mystic BBS

MS-DOS and compatible 
 Celerity BBS
 Citadel – including DragCit, Cit86, TurboCit, Citadel+
 Ezycom – written by Peter Davies. FBB (F6FBB) – packet radio BBS system, still in use. GBBS (Graphics BBS) – used in the Melbourne area. GT-Power
 L.S.D. BBS – written by The Slavelord of The Humble Guys (THG). The Major BBS
 Maximus
 McBBS – by Derek E. McDonald. Opus-CBCS – first written by Wynn Wagner III. PCBoard
 PegaSys
 ProBoard BBS – written by Philippe Leybaert (Belgium). Pyroto Mountain
 QuickBBS – written by Adam Hudson, with assistance by Phil Becker. RBBS-PC
 RemoteAccess – written by Andrew Milner. Renegade – written by Cott Lang until 1997. Currently maintained by T.J. McMillen since 2003. RoboBOARD/FX – written by Seth Hamilton. Searchlight BBS (SLBBS)
 Spitfire
 SuperBBS – by Aki Antman and Risto Virkkala. TBBS
 TCL
 Telegard
 TriBBS
 TAG
 Virtual Advanced – also known as VBBS. Waffle – written by Tom Dell, and supported UUCP (and Fidonet through extensions). Wildcat! – originally by Mustang Software. Worldgroup – The latest version of MajorBBS, the last released by Galacticomm. OS/2 
 AdeptXBBS
 Maximus
 PCBoard
 Virtual Advanced – also known as VBBS. Tandy TRS-80 
 Forum 80
 TBBS - by Phil Becker, for the Model III/4

Unix and compatible 
 Citadel – including Citadel/UX, Dave's Own Citadel. Falken – Linux versions by Chris Whitacre, past MS-DOS versions written by Herb Rose. Firebird BBS – Linux-based. LysKOM
 Maple BBS
 Maximus
 OpenTG – OpenTelegard BBS
 PCBoard v16 – formerly by CDC, now by MP Solutions, LLC. PicoSpan
 Waffle (BBS software)

References 

BBS
Bulletin board system