Free Chess Engines
Freely available chess engines
There are hundreds of freely available chess engines. Many run on Windows or are open source. A few of the strongest are listed here. Others may be found by examining the rating lists.
Elo ratings taken from CCRL 40/40, retrieved in November 2007.
- Alaric (v707 Elo 2752) by Peter Fendrich (SE)
- Aristarch (v4.50 Elo 2698) by Stefan Zipproth (DE)
- Baron (v1.8.1 Elo 2625) by Richard Pijl (NL)
- Crafty (21.6 now available) by Bob Hyatt (US)
- Delfi (v5.2 Elo 2756) by Philippe Fabiani (FR)
- Fruit (v2.3.1 Elo 2863) by Fabien Letouzey (FR)
- Gambit Fruit (derived from Fruit by Fabien Letouzey/Bryan Hofmann (FR/US)
- Glaurung (v1.2.1 Elo 2726) by Tord Romstad (NO)
- Ktulu ( (v4.2) by Rahman Paidar (IR)
- List (v5.12 Elo 2720) by Fritz Reul (DE)
- Movei (v0.08.438 Elo 2748) by Uri Blass (IL)
- Naum (v1.91 Elo 2704) by Aleksandar Naumov (RS/CA)
- Pharaon (3.5.1 Elo 2708) by Franck Zibi (FR)
- ProDeo (v1.2 Elo 2689) by Ed Schröder (NL)
- Ruffian (v1.0.5 Elo 2711) by Per-Ola Valfridsson (SE)
- Rybka (v.10 (free version) Elo 2920) by Vasik Rajlich (CZ/US)
- Scorpio (v1.9 Elo 2754) by Daniel Shawul (ET)
- Sjeng (also the engine in Mac OS X Chess) by Gian-Carlo Pascutto (BE)
- Slow Chess (vBlitz WV2.1 Elo 2740) by Jonathan Kreuzer (US)
- Spike (v1.2 Turin Elo 2855) by Volker Böhm and Ralf Schäfer (DE)
- Toga II (v1.3.4 Elo 2868) derived from Fruit by Fabien Letouzey/Thomas Gaksch (FR/DE)
- Wildcat (v7 Elo 2730) by Igor Korshunov (RU)
- Zappa (v1.1 (free version) Elo 2687) by Anthony Cozzie (US)
