| Subject | English | Thesaurus |
| IT, abbr. | Andrew Mail / Message System | AMS (Unix) |
| IT, abbr. | Automated Message Handling System | AMHS (MHS) |
| abbr., scottish | Automated Message Handling System | AMHS |
| mil., abbr. | Automated Message Processing Dissemination System | AMPDS |
| abbr., scottish | Automated Message Processing System | AMPS (UK) |
| mil., abbr. | Automated Message Processing System | AMPS |
| mil., abbr. | Automated Message System | AMS |
| progr. | automated system message | AS message (ssn) |
| mil., abbr. | Automated Text Message Handling System | ATMHS |
| abbr., progr. | automatic communication and message processing system | automatic communications and message processing system (ssn) |
| progr. | automatic communications and message processing system | ACAMPS (ssn) |
| abbr., scottish | Automatic Message Entry System | AMES |
| abbr., astronaut., mil. | Automatic Message-Handling System | AMHS |
| mil., abbr. | Compartmented All-Source Analysis System Message Processing System | CAMPS |
| abbr., scottish | Computer Assisted Message Processing System | CAMPS (NATO) |
| abbr., comp. | Defence Message System | DMS (Vosoni) |
| abbr., scottish | Defence Message Transfer System | DMTS |
| IT, abbr. | Defense Message System | DMS (Mil., USA) |
| abbr., astronaut., mil. | Defense Message System | DMS |
| IT, abbr. | Defense Message System Implementation Group | DMSIG (organization, DMS, Mil., USA) |
| IT, abbr. | Defense Message System Transition Working Group | DMSTWG (organization, DMS, Mil., USA) |
| abbr., EBRD | Electronic Message System | EMS |
| mil., abbr. | Emergency Action Message Authentication System | EAMAS |
| mil., abbr. | Emergency Message Automatic Transmission System | EMATS |
| abbr., scottish | Enhanced MEECN Message Processing System | EMMPS (USA) |
| mil., abbr. | enhanced MEECN message processing system | EMMPS |
| mil., abbr. | EUCOM Message Handling System | EMHS |
| mil., abbr. | Exercise Message Analysis System | EMAS |
| mil., abbr. | Expert Systems Message Router | ESMR |
| abbr., comp., net. | Global Message Handling System | GMHS |
| int.transport., abbr. | Handling European Railway Message Exchange-System | HERMES |
| IT, abbr. | Host AUTODIN Message Processing System | HAMPS (AUTODIN, Mil.) |
| mil., abbr. | Improved Emergency Message Automated Transmission System | IEMATS |
| abbr., scottish | Improved Emergency Message Automation Transmission System | IEMATS (USA) |
| abbr., scottish | Integrated Message Handling & Control System | IMUS |
| abbr., scottish | Interim Joint Message System | IJMS |
| mil., abbr. | Interim JTIDS Message System | IJMS (or Specification) |
| aeron., abbr. | International Civil Aviation Message Routing System | ICAMRS |
| abbr., scottish | JINTACCS Automated Message Preparation System | JAMPS |
| mil., abbr. | Joint Automated Message Editing System | JAMES |
| mil., abbr. | LANTCOM Message Processing System | LAMP |
| mil., abbr. | MEECN message processing system | MMPS |
| IT, abbr. | Message Conversion System | MCS |
| IT, abbr. | Message Conversion System Message Processor | MCSMP (MCS) |
| IT, abbr. | Message Handling System | MHS (GOSIP, X.400, Novell, SPX, IPX) |
| telecom., abbr. | Message Handling System | MHS (X.400) |
| abbr., scottish | Message Orientated Text Interchange System | MOTIS |
| mil., abbr. | Message Processing and Distribution System | MPDS |
| abbr., scottish | Message Processing & Distribution System | MPDS (USA) |
| comp., net., abbr. | Message Routing System | MRS |
| NASA, abbr. | Message Switching System | MSS |
| abbr. | Message System | MS (Alex Lilo) |
| telecom., abbr. | Message Telephone System | MTS |
| abbr., file.ext. | Message Transfer Service/System | MTS |
| IT, abbr. | Message Transfer System | MTS (MHS) |
| telecom., abbr. | Message Transfer System | MTS |
| abbr., astronaut., mil. | Message Transport System | MTS (Internet) |
| IT, abbr. | Message-Orientated Text Interchange System | MOTIS (ISO 10021, JTC1) |
| abbr., comp., net. | Message-Oriented Text Interchange System | MOTIS |
| comp., abbr. | Message-Oriented Text Interchange Systems | MOTIS |
| IT, abbr. | Military Message Handling System | MMHS (Mil., MHS) |
| abbr., comp., net. | Open Systems Message Exchange | OSME |
| IT, abbr. | Public Message System | PMS |
| mil., abbr. | Secured Message And Response System | SMARS |
| abbr. | Short Message System | SMS (Vosoni) |
| abbr., scottish | Submarine Automated Message Handling And Distribution System | SAMHADS |
| mil., abbr. | System Message File | SMF |
| abbr., progr. | system message guide | system message manual (ssn) |
| abbr., scottish | Tactical Message Handling System | TMHS |
| mil., abbr. | UTACCS Message System | UMS |
| abbr., file.ext. | Voice Message System | VMS |