4W Consulting
   Consulting company specializing in providing expert Cache and MUMPS, and related technologies, application development as well as systems management services.
   http://www.mumpsprogrammer.com/

CDE Software Systems Corp
   MUMPS programming available for Intersystems DTM-PC and DT-MAX platforms available to the greater Chicago and Milwaukee metro areas.
   http://www.cdesystems.com/htm/CDE_Products.htm

Forest Software
   A software house specialising in M (Mumps). It was formed in 1983 and can provide systems design, programming and support of M based systems.
   http://www.forestsoftware.co.uk/

George James Software
   Program development, consulting, training, support services; VC/m web-enabled configuration management system to manage documents and source code across many OSs, and add-in tools for Caché and related M technologies.
   http://www.georgejames.com/

InterSystems M Technologies
   A forum and web site for users of InterSystems tools and M in general
   http://mtechnology.intersys.com/

Jumps
   Java from MUMPS: comprehensive framework for automated migration from MUMPS language and runtime, to Java and relational databases (RDBMS); implemented as compiler that compiles MUMPS code into Java.
   http://www.mumps-migration.com/

M FAQs
   Frequently Asked Questions about M/MUMPS
   ftp://rtfm.mit.edu/pub/usenet/comp.lang.mumps/

M Technology Association United Kingdom and Ireland (MUG-UK& I)
   A non-profit educational organisation. Its aims are to further the utilisation, improvement and understanding of Cache and the M Technology language and its dissemination within the UK and Ireland.
   http://www.camta.net/

M User Group Deutschland
   The German MUG (in German, of course)
   http://www.mug-d.de/

MDC: MUMPS Development Committee
   Home: language description, MWAPI, OMI, standards, meetings, implementations, free versions, related products and services, humor.
   http://207.192.157.194/mdc/

MSM-Workstation
   Information about MSM-WS, an M implementation for Win32
   http://www.georgejames.com/ws/

MTRC
   has info about the MUMPS (M) computer language. Features include an M Job Opportunities database, the M User Directory, and links about MUMPS.
   http://www.mcenter.com/mtrc/index.html

MUMPS
   Long, growing article, with links to related topics. [Wikipedia]
   http://en.wikipedia.org/wiki/MUMPS

M[UMPS] by Example
   An online copy of part of a book by the same name
   http://www.jacquardsystems.com/Examples/

Real Software Co.
   Makes M21, implementation of M language/database for the 21st Century.
   http://www.m21.uk.com/

The Genesis of MUMPS and MUG
   Story of the creation of the language at The Massachusetts General Hospital, and its development into a procedural, interpreted general-purpose language, oriented toward database use. By Glen Steinbach.
   http://207.192.157.194/MDC/genesis.htm

The Mumps Compiler and MultiDimensional and Hierarchical Toolkit
   Compiler and interpreter for Linux, Solaris, Windows. Implements much of most recent Mumps standard. [free]
   http://cs.uni.edu/~okane/

The oMega Project
   Implementation of M-Technology+ for Linux. [Open Source]
   http://home.clara.net/finch/