Apple Workgroup Server

The Apple Workgroup Server (WGS) was a series of professional server computers designed and introduced by Apple Computer on March 22, 1993. The first Workgroup Server 95 model began shipping in April 1993. They were based on special configurations of existing Macintosh Quadra and Power Macintosh models. They could run various versions of classic Mac OS as well as MkLinux.

History
The "Workgroup Server" brand was replaced by "Macintosh Server" with the introduction of PowerPC G3 and G4 models in March 1998. The Macintosh Servers were superseded by the Xserve line in May 2002.

Articles

 * A History of Apple’s Server Products — Sans the Xserve, Which was Boring by Stephen Hackett at 512 Pixels (2012-03-13)