CMU is no longer doing general system development work on the Mach Operating System Kernel. The reseach goals of Mach were accomplished and faculty interest in OS research has moved in new directions. As a result, suppport for external users of the Mach kernel is mostly just in the form of on-line help files, documents and unlicensed code. The Mach WWW Home Page will direct you to other sources of information.
There is still some work being done at CMU on the Mach multi-server system (Mach_US) and real-time Mach. Information about both of these areas is accessible from the Mach home page. Mark Stevenson may contacted about Mach_US at email@example.com. The Mach real-time group can be reached at firstname.lastname@example.org.
Development work on Mach is also continuing at the Open Software foundation, University of Utah's Flexmach project, Helsinki University of Technology's LITES system and the Free Software Foundation's HURD system.