jMARS (59K) by Brian Haskin is a basic ICWS'94 simulator written in Java.

Corewar 88 v4.97 (35K) by Mintardjo Wangsaw implements ICWS'88 Redcode.

MARS (181K) by Tiziano Mengotti is an ICWS'86 simulator for Windows. Supplied with Turbo Pascal source.

Mercury2 (24K) is Albert Ma's ICWS'88 Redcode simulator. ASM source and DOS binary.

Core War for Windows v1.11 (126K) by Brad Rembielak is an ICWS'88 Redcode simulator with optional support for in-memory / in-register evaluation.

King of the Hill Core War (21K) is a PC port of Bill Shubert ICWS'88 compatible Corewar simulator.

Corewar (63K) by Edwin J. Herrell and Brad J. Hlista implements most of ICWS'86, < is missing. There are some extensions including JMG, DJZ, JWN, RND and SLP.

corewar.lsp is Leif Lindgren's CommonLISP implementation of Dewdney's original Corewar spec with the SPL opcode.

COREWARS for ANS-Forth by Laboratory Microsystems, modified by Marcel Hendrix. Implements a variation of Dewdney's original spec.

Core Wars in Scheme (13K) by Sam Shen supports most of the ICWS'86 standard with the addition of DJZ, PCT and NOP. JMZ and JMN are not supported.

CoreWar Pro v3.02 (99K) by Stefan Strack supports a superset of the ICWS'88 standard. Additions include the opcodes JMG, DJZ, PCT, RND, SPC, HLT, and EXC.

CoreWar Pro v3.0 (103K) by Stefan Strack supports a superset of the ICWS'88 standard. Additions include the opcodes JMG, DJZ, PCT, RND, SSP, RLS, HLT, GSB, RET, PSH, POP, SSZ and EXC.

CoreWar Plus v2.02 (138K) by Stefan Strack supports a superset of the ICWS'88 standard. Additions include the opcodes JMG, DJZ, PCT, RND, SSP, RLS, HLT, GSB, RET, PSH, POP, SSZ and EXC.

CoreLife 1.0 (65K) by Brent Adams is a DOS emulator for a variant of Corewar. CoreLife is played on a 2 dimensional grid and includes an integrated editor and debugger.

RDaSS v2.1 (119K) is an implemention of ICWS'86 Redcode by Maz Spork. Includes C source code for the assembler, simulator and disassembler.

Corewars (24K) by Na Choon Piaw implements the majority of ICWS'86 Redcode in C. Auto-decrement addressing is missing.

core wars v3.0 (29K) by Danny Sharpe differs slightly from the original Corewar specification and has some additional opcodes HLT, SPL, DJN, RND and PCI.

Corewar 1.0 (63K) by Werner Antensteiner and Gert Kienast, has a VGA interface and implements Dewdney's Redcode spec with some additions. These include five opcodes SPL, DJN, RND, JWN and PCT and two addressing modes for the b-field of MOV, < and >.

Corewars v2.22 (22K) by David E. Thomas, based on code by Kevin A. Bjorke. Implements the original specification, with the addition of the PCT instruction.

Corewar (46K) by Kevin A. Bjorke for CP/M, modified by Lee Bradley.

Corewar (15K) by Kevin A. Bjorke is an implementation of Dewdney's original Corewar specification, written by Kevin A. Bjorke, ported by R. Green and extended with a split screen core display by R. Sawyer.

Corewar (11K) by Berry Kercheval with additions by Andries Brouwer. Includes the SPL instruction and enforces a minimum distance / maturity for new processes. An earlier version of Corewar (13K) supports FORK.

Corewar (6K) by Berry Kercheval implements the original Corewar spec in C.

corewar.co.uk