WonderBoi32
info2.info.tampere.fi
A Wonderswan Color emulator for GP32. Includes source download.
Cygne
cygne.emuunlim.com
An open source emulator for Windows.
Oswan
bannister.org
A freeware emulator for MacOS developed by David Raingeard and ported to the Macintosh by Richard Bannister.