Instead, IBM turned to Microsoft Corporation, which developed MS-DOS based on version 2.2 of CP/M. By the mid 1980s, MS-DOS had become the standard operating system for IBM-compatible personal computers. CP/M is now obsolete.

Downloadable CP/M C compiler
Provides links to download a CP/M C compiler and related documentation.

Yahoo!'s CP/M page
Yahoo!'s directory of CP/M.

CP/M FAQ
Comprehensive FAQ for CP/M from the comp.os.cpm newsgroup.

CP/M information archive
Contains links to CP/M related documents, newsgroups, FTP sites, and related Web sites.

Digital Research CP/M
Contains a brief history of CP/M, with links to Caldera's CP/M archive and FAQ.