IBM Remote Access Computing (RAX) is a discontinued early time-sharing system for IBM System/360 introduced in 1966. RAX was based on an earlier system, RACS. developed jointly by IBM and Lockheed Aircraft in Marietta, Georgia in 1965. The system influenced a number of other timesharing systems including MCGILL-RAX from McGill University, McGill's MUSIC, and Reactive Terminal Service (RTS) from ITT Data Services. In the 1970s Boston University used RAX as the basis of its VPS system, which ran as a guest operating system running on VM/370.