Vassal began life as Virtual Advanced Squad Leader (VASL) in 1996, written by our founder Rodney Kinney. VASL was for playing Advanced Squad Leader only, but its promise as a general virtual tabletop was obvious and by the end of 2002, Vassal was born and VASL transformed from a standalone program into one of many modules for Vassal.
Many people have contributed code or documentation to Vassal (and to VASL before that):
We've striven to keep a complete list, but with 25 years of project history spread across CVS, Subversion, and now Git… it's possible that we've missed someone. If you should be on this list, let us know.