[1] Multiuser Archival and Retrieval System

[2] Multimediales Auskunfts- & Recherche-System (für Umweltdaten, ZGDV)

[3] Multicast Address Resolution Server (ATM/MPOA)

[4] Projekt an der TUB: Maintainable Realtime System

[5] MAchine Retrieval System (->"IEEE Standard Dictionary")

[6] Management Analysis Reporting System (->"IEEE Standard Dictionary")

[7] Marconi Automatic Relay System (->"IEEE Standard Dictionary")

[8] Military Affiliated/Amateur Radio System (->"IEEE Standard Dictionary")

[9] Multiaperture Reluctance Switch (->"IEEE Standard Dictionary")

[10] Martin Autopmatic Reporting System (->"NASA Acronym List")

[11] Modular Airborne Recorder System (->"NASA Acronym List")