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

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

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

Hal Bower's Home Page  
   Fixes and utilities for CP/M and Z-Systems, ZSDOS/ZDDOS, and B/P BIOS.
   http://home.att.net/~halbower/

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

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

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

John Elliott's CP/M Main Page  
   A technical resource about internals of CP/M.
   http://www.seasip.demon.co.uk/Cpm/index.html

MaxFrame Corporation  
   Information about the history of CP/M and Digital Research. Links to various CP/M resources.
   http://www.maxframe.com/CPM.HTM

The CP/M-86 Software Repository  
   Downloads and patches for CP/M-86. Updated regularly.
   http://www.seanet.com/~klaw/

The Online Software Museum - CP/M  
   An article about the history of CP/M, including a short user's guide and an on-line access to a real CP/M system.
   http://museum.sysun.com/museum/cpm.html

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

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

John R Pierce's Home Page  
   Contains pictures of Digital Research people.
   http://www.hogranch.com/digital.research/

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

comp.os.cpm Frequently Asked Questions.  
   
   http://www.cpmspectre.pwp.blueyonder.co.uk/cpm/cpm_faq.htm

OAK Repository - CP/M Archive (mirror)  
   German mirror of the largest public CP/M archive.
   ftp://ftp.mayn.de/pub/cpm/

ZCN - CP/M-like operating system for the Amstrad NC100/NC200  
   A free operating system for the Amstrad NC100 (Notepad) and NC200 (Notebook). It's largely compatible with CP/M 2.2.
   http://www.ibiblio.org/zcn/

CP/M 3.0 for the C128  
   Comprehensive description on how to build a CP/M Plus version for the Commodore C128.
   http://www.8086.info/c128/

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