California Digital, Inc. - A company that still sells CP/M.
Commercial CP/M Software Archive - A collection of CP/M software, including source codes and documentations.
Commodore and CP/M - Technical description of Commodore's implementation of CP/M Plus in C128, including a couple of tools.
comp.os.cpm Frequently Asked Questions.
CP/M 3 patches for Spectrum and Amstrad - CP/M patches for Spectrum +3 and Amstrad PcW16.
CP/M Center - Information about CP/M and links to various CP/M resources.
Hal Bower's Home Page - Fixes and utilities for CP/M and Z-Systems, ZSDOS/ZDDOS, and B/P BIOS.
Joe Wein's DRI page - Some notes about Gary Kildall, CP/M and Microsoft from a former DRI programmer.
John D. Baker's home page - Information about the CP/M operating system on an Apple II & III, 8-bit IDE controller and CP/M Houston User's Group.
John Elliott's CP/M Main Page - A technical resource about internals of CP/M.
John R Pierce's Home Page - Contains pictures of Digital Research people.
MaxFrame Corporation - Information about the history of CP/M and Digital Research. Links to various CP/M resources.
OAK Repository - CP/M Archive (mirror) - German mirror of the largest public CP/M archive.
Osborne CP/M Library - Archive containing software and documentation for the Osborne-1 and Osborne Executive.
The CP/M-86 Software Repository - Downloads and patches for CP/M-86. Updated regularly.
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.
The Unofficial CP/M Website - CP/M binaries and documentation, including the original source code and manuals.
Z-Node 51 - Downloads and information for CP/M, Z-systems and Z80 computers. Contains a collection of articles and manuals, too.