CPM

California Digital, Inc. - A company that still sells CP/M.
www.cadigital.com

Commercial CP/M Software Archive - A collection of CP/M software, including source codes and documentations.
www.retroarchive.org/cpm/

Commodore and CP/M - Technical description of Commodore's implementation of CP/M Plus in C128, including a couple of tools.
www.herne.com/cpm.htm

CP/M 3 patches for Spectrum and Amstrad - CP/M patches for Spectrum +3 and Amstrad PcW16.
www.cpmspectre.pwp.blueyonder.co.uk/cpm/cpm-indx.htm

CP/M - The First PC Operating System - Information about the history of CP/M and Digital Research. Links to various CP/M resources.
www.digitalresearch.biz/CPM.HTM

CP/M Center - Information about CP/M and links to various CP/M resources.
www.gaby.de/ecpm.htm

CP/M Main Page - Resource on technical internals, software, utilities, many links; by John Elliott.
www.seasip.demon.co.uk/Cpm/

HalBower's Page - Fixes, programs, libraries, utilities, documents for CP/M and Z-Systems, ZSDOS/ZDDOS, B/P BIOS.
home.att.net/~halbower/

Joe Wein's DRI page - Some notes about Gary Kildall, CP/M and Microsoft from a former DRI programmer.
www.joewein.de/dri.html

OAK Repository - CP/M Archive (mirror) - German mirror of the largest public CP/M archive.
http://tylerschnaidt.com/blocked/nph-index.pl/010110A/ftp/ftp.mayn.de/pub/cpm/

Osborne CP/M Library - Archive containing software and documentation for the Osborne-1 and Osborne Executive.
www.guntersville.net/osborne/

S100-Manuals - An archive of antique software and manuals related to S100 and CP/M hardware and software.
www.s100-manuals.com/

The Unofficial CP/M Website - CP/M binaries and documentation, including the original source code and manuals.
www.cpm.z80.de

Wikipedia: CP/M - Encyclopedia article, with links to many related topics.
en.wikipedia.org/wiki/CP/M

ZCN - Operating system for Amstrad NC100 Notepad and NC200 Notebook; mostly compatible with CP/M 2.2; descriptions, documents, downloads. Free.
www.ibiblio.org/zcn/

Z-Node 51 - Downloads and information for CP/M, Z-systems and Z80 computers. Includes a collection of articles and manuals, too.
www.znode51.de/indexe.htm