8 links
Chess Tiger 15.1 for Palm
chesstiger.com
[Commercial - $20, free demo] The strongest Palm chess program for non ARM Palms, color/greyscale, reads/writes PGN. Uses 295Kb RAM [updated 9/9/2003].
ChessGenius 2.3 for Palm
chessgenius.com
[Commercial -$25, free demo] World chess champion engine, ARM/68K support, color, PGN, infrared play. Uses 160Kb RAM [updated 2/23/2005].
Double Chess 3.1
nonvi.com
[Shareware-$15] Plays chess against you, includes double-board option. [V3.1 4/17/2004]
HIARCS 9.6 Palm
hiarcs.com
[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]