This article is from the MachTen & CodeBuilder FAQ, by Jaime Julca firstname.lastname@example.org with numerous contributions by others.
MachTen is a full-fledged UNIX system that runs over the MacOS. CodeBuilder
has a MachTen kernel and many of the UNIX features, but lacks MachTen's
networking. CodeBuilder includes many tools available to MachTen owners only
on the Ported Apps Vol. 2 CD.