PalmOS

Chess Quantum 3.6
[$6 Commercial] Chess playing program, color, hi-res, OS5 support, 766 Kb, [v3.6 11/2006]
http://www.palmgear.com/index.cfm?fuseaction=software.showsoftware&prodID=76107

Chess Tiger 15.2 for Palm
[Commercial - $20, free demo] The strongest Palm chess program for non ARM Palms, color/greyscale, reads/writes PGN. Uses 295Kb RAM [updated 3/22/2004].
http://www.chesstiger.com

Chess Timer for Palm
Utility for the Palm line of devices which replaces a mechanical chess timer.
http://www.eshayne.com/ChessTimer

ChessGenius 2.3 for Palm
[Commercial -$25, free demo] World chess champion engine, ARM/68K support, color, PGN, infrared play. Uses 160Kb RAM [updated 2/23/2005].
http://www.chessgenius.com/palm/

ChessPad
[Shareware $25] Reads/Writes chess games in PGN format. Does NOT play chess itself - it lets you play over games. V3.03 (in beta) works with the DGT sensory board.
http://www.solutionsinhand.com/ChessPad/ChessPad.htm

Chromagames 1.8
[Shareware-$20] Chess, checkers, and backgammon in one 444kb package. Greyscale/color/hires display.[Updated 12/13/2004]
http://www.astraware.com/palm/featured/chromagames/?skucode=0201-004-0004

Double Chess 3.1
[Shareware-$15] Plays chess against you, includes double-board option. [V3.1 4/17/2004]
http://www.nonvi.com/palm_chess.html

HIARCS 9.6 Palm
[Commercial $40.00, free demo] Strongest ARM Palm chess program, beat GM 3-1 in match, ARM/68K, color, PGN, hi-res, 500 kb [Updated 12-11-05]
http://hiarcs.com/palm_hiarcs.htm

Naum
Free Palm Chess program.
http://www.geocities.com/naum_chess/palm/index.html

One Stop Chess
[ Freeware ] Palm chess game with GNUChess engine, 80 kb
http://www.whitehorsegames.com/chess/

OpenChess
[Free] Palm chess with several chess engines (Fruit,GNUChess,Toga,Phalanx,Scorpio - [V3.0RC2 1/2007]
http://palmopenchess.sourceforge.net/

PocketChess Deluxe 2.51
[Shareware - $20] Full featured chess for Palm with color, PGN, infrared, variation support, 3000 game database (234Kb).
http://www.handmark.com/products/detail.php?id=85

Problemiste Palm
[Shareware 25 Euros] Devoted to chess problems. Program solves direct mates, helpmates, selfmates. 100,000 downloadable problems.
http://pagesperso-orange.fr/problemiste/

Rampart Chess 2.7 for Palm
[Commercial -$9.95, no demo] hires support, OS5 enhanced, 5 levels of game play, two-player mode, position setup 263Kb
http://www.rampartgames.com/ramchesspalm.htm

Palm Chess: HIARCS, Genius, Tiger
Rates the playing strength of these three programs and estimates their ratings. <small>(June 30, 2004)</small>
http://www.elhchess.demon.co.uk/palmchss.htm

ChessGenius for Palm
Review of ChessGenius program on the Palm platform. <small>(April 13, 2004)</small>
http://kantack.com/chess/chessgenius.htm

Chess Tiger for Palm PDAs
Review of Chess Tiger chess-playing program. <small>(January 7, 2003)</small>
http://kantack.com/chess/chesstiger.htm

Chess for PalmOS
Tiger-Genius match, Tiger/Genius/PocketChess test scores, short reviews of 7 others.. <small>(December 25, 2002)</small>
http://www.fishdev.net/chess/palmchess/

Chess Tiger 14.5 vs Chess Genius 1.3
A USCF Life Master reports on a 26-game match between these Palm programs. <small>(September 4, 2001)</small>
http://pagesperso-orange.fr/ct_chess/ctgen.html

Chess on the Palm OS
Review of Chess Genius 1.3 and PocketChess 2.2. <small>(June 1, 2001)</small>
http://www.palmpower.com/issues/issue200106/chess001.html

PocketChess 2.0 vs. Chess Genius 1.2
A report by Toby Robison about a seven game match between these two chess programs, at various time controls. <small>(February 1, 2001)</small>
http://www.the-gadgeteer.com/pocketchess-vs-chessgenius-article.html