List of codebases

MU Tree Branch	1st Derivative	Later Derivatives
TinyMUD	TinyMUSH, TinyMUCK, TinyMUSE, MUF	PennMUSH, RhostMUSH, TinyMUX	PernMUSH
Aber
Uber
Diku	Merc	NiMUD, ROM, Envy, Godwars	EmlenMUD, Godwars II, SMAUG
MUX
LPMud
DUM