Whom holds the copyright on the Cygwin/X source code?
Cygwin/X proper doesn’t have a single copyright holder, as Cygwin/X is made up of two parts, namely Cygwin and the X Window System; each part follows a different scheme in regards to whom will hold the copyright on source code. See Q: 11.5. and Q: 11.6. for more information regarding whom holds the copyright on Cygwin/X source code.