CD gamedriver and CD mudlib (also known as CDlib) are popular LPMud gamedriver and mudlib. The name CD comes from Chalmers Datorförening (Chalmers Computer Society), which most of the developers were members of.
In the late 1991, Lars Pensjö, creator of Genesis LPMud and of LPMud itself, has retired from the project. The rest of the administration has decided to create CD as a fork from Lars's development version of LPMud, known as LPMud 3.0. Since 1998, it is no more publicly developed, although some muds (like Arkadia LPMud) have been releasing their modified versions.