Many individuals have contributed to the Computer History Simulation Project, including:
| Bill Ackerman | PDP-1 consulting |
| Anders Ahgren | VMS Ethernet simulation, Windows direct device access |
| Dave Babcock | IBM 1620 simulator debugging and enhancements |
| Alan Bawden | ITS operating system consulting |
| Winfried Bergmann | Linux port testing |
| J. David Bryan | HP debugging and features |
| Phil Budne | Solaris port testing, PDP-1 software transcription and debugging |
| Max Burnet | DEC documentation, software, and working examples |
| Robert Alan Byer | VMS socket support and testing, VMS MMS file |
| Doug Carman | PDP-11 bootstrap debugging, RSX-11M+ images and debugging |
| James Carpenter | Linux port testing |
| Chip Charlot | Mentec Corporation license |
| Louis Chrétien | Macintosh porting |
| Dave Conroy | HP 21xx documentation, PDP-10 and 18b PDP debugging |
| Rich Cornwell | IBM 7000 series simulators |
| L Peter Deutsch | PDP-1 Lisp source code and permission |
| Ethan Dicks | PDP-11 2.9 BSD debugging |
| John Dundas | PDP-11 CPU debugging, KW11-P, DHQ11, CR11 simulators |
| Stan Dunten | IBM 7094 CTSS hardware information |
| Jonathan Engdahl | PDP-11 device debugging |
| Carl Friend | Nova and Interdata documentation, RDOS disk images |
| Megan Gentry | PDP-11 debugging |
| David Gesswein | PDP-8 and PDP-9/15 documentation, PDP-8 DECtape, disk, casette, and paper tape images, PDP-9/15 DECtape images |
| Dick Greeley | Digital Equipment Corporation licenses |
| Gordon Greene | PDP-1 Lisp machine readable source |
| Lynne Grettum | PDP-11 RT-11, RSTS/E, RSX-11M legal permissions |
| Franc Grootjen | PDP-11 2.11 BSD debugging |
| Doug Gwyn | Portability debugging |
| Philipp Hachtmann | H316 debugging |
| Kevin Handy | VAX VMS/NetBSD debugging, TS11/TSV05 documentation, make file |
| Ken Harrenstein | KLH PDP-10 simulator |
| Bill Haygood | PDP-8 information and simulator, OS/8 disk images |
| Wolfgang Helbig | DZ11 implementation, PDP-11 debugging |
| Mark Hittinger | PDP-10 debugging |
| David Hittner | SCP debugging, DEQNA simulator and Ethernet library |
| Tarik Isani | DEC Pro/350 simulator |
| Sellam Ismail | GRI-909 documentation |
| Jay Jaeger | IBM 1401 consulting |
| Davis Johnson | Interdata OS32MT debugging |
| Doug Jones | PDP-8 information and simulator, OS/8 disk images |
| Brian Knittel | IBM 1130 simulator, SCP extensions for GUI support |
| Al Kossow | HP 21xx, Varian 620, TI 990, Interdata, SDS, IBM, DEC documentation and software, XVM/DOS recovery |
| Arthur Krewat | DZ11 changes for the PDP-10 |
| Harlan LeFevre | PDP-7 DECsys kit and other PDP-7 programs and documentation |
| Mirian Crzig Lennox | PDP-10 ITS debugging and instructions |
| Don Lewine | Data General license |
| Tim Litt | PDP-10 hardware documentation, schematics, software documentation, media recovery and conversion |
| Bill McDermith | HP 21xx debugging, 12565A disk simulator |
| Scott McGregor | The Santa Cruz Operation license |
| Richard Miller | Interdata UNIX V6 and V7 debugging |
| Jeff Moffatt | HP 21xx information, documentation, and software |
| Alec Muffett | Solaris port testing |
| Terry Newton | HP 21MX debugging |
| Thord Nilson | DZ11 implementation |
| Charles Owen | MITS Altair 8800 simulator, Data General Eclipse simulator, IBM System 3 simulator, Nova documentation and simulator debugging, IBM 1401 diagnostics, software, and debugging |
| Sergio Pedraja | MINGW environment debugging |
| Derek Peschel | DDT-1 transcription and debugging |
| Paul Pierce | Media recovery and conversion, IBM 1401 information and documentation |
| Dave Pitts | IBM 709x simulator and debugging |
| Mark Pizzolato | SCP, Ethernet, VAX simulator debugging and improvements |
| Hans Pufal | PDP-10 debugging, PDP-15 bootstrap, PDP-9 restoration, Elliot 903 simulator, DOS-15 recovery and debugging |
| Bruce Ray | Software, documentation, bug fixes, and new devices for the Nova, OS/2 porting |
| Tim Riker | SourceForge archive setup |
| Craig St Clair | Digital Equipment Corporation archives |
| Richard Schedler | Public repository maintenance |
| Peter Schorn | Macintosh porting; Altair Z80 simulator |
| Stephen Schultz | PDP-11 2.x BSD debugging |
| Olaf Seibert | NetBSD port testing |
| Brian and Barry Silverman | PDP-1 simulator, Lisp and Spacewar sources |
| Tim Shoppa | Nova documentation and software, PDP-10 and PDP-11 software archive, site hosting for SIMH |
| Michael Short | IBM 1620 debugging |
| Chris Smith | PDP-10 floating point debugging |
| Van Snyder | IBM 1401 zero footprint card and tape bootstraps, Fortran, Autocoder, and testing and debug of numerous fine points of instructions and I/O |
| Michael Somos | PDP-1 debugging |
| Hans-Michael Stahl | OS/2 port, TERMIOS terminal emulator implementation |
| Ken Staley | 4.3BSD kit for the VAX |
| Tim Stark | TS10 PDP-10 simulator; VAX debugging |
| Larry Stewart | Original suggestion for the project |
| Chris Suddick | PDP-11 simulator floating point debugging |
| Ben Supnik | Macintosh timing routine |
| Bob Supnik | SIMH simulators |
| Ben Thomas | VMS terminal emulator implementation |
| Deb Toivonen | Digital Equipment Corporation archives |
| Warren Toomey | PDP Unix Preservation Society (PUPS), PDP-11 UNIX disk images |
| Peter Trimmel | VAX debugging, Linux large file support |
| Mike Umbricht | DEC documentation, H316 schematics and documentation |
| Leendert Van Doorn | PDP-11 UNIX V6 debugging, TERMIOS terminal emulator implementation |
| Tom Van Vleck | IBM 7094 CTSS hardware information |
| Fred Van Kempen | DEUNA code, RK611 emulator, PDP-11 debugging, VAX/Ultrix debugging |
| Holger Veit | OS/2 socket support |
| Andrew Warkentin | PDP-15 XVM/RSX kits and debugging |
| David J Waks | PDP-7 SIM8 and PDP-8 ESI-X source code and permission |
| Tom West | Nova documentation |
| Adrian Wise | H316 simulator, documentation, and software |
| John Wilson | PDP-11 simulator and RT-11, RSX-11M, and RSTS/E disk images |
| Joe Young | RP debugging on Ultrix-11 and BSD |
In addition, the following companies have graciously licensed their software for hobbyist use:
Data General Corporation
Digital Equipment Corporation
Compaq Computer Corporation
Hewlett-Packard Corporation
Mentec Corporation
The Santa Cruz Operation
Caldera Corporation
Last, but hardly least, I would like to thank the Computer History Museum, Mountain View, California, and the Rhode Island Retro-Computing Society, Providence, Rhode Island, and their staffs and volunteers, for their support and help.
Updated 02-Sep-2007 by Bob Supnik (simh AT trailing-edge DOT com - anti-spam encoded)