VM Software[1] was a software company whose product line focused on mainframes running IBM's VM/CMS operating system.
[2] They had 11 products named VMxxxxx, with features that complemented the systems-oriented capabilities that IBM's software provided.
With the 1987 arrival of IBM's 9370 mid-range mainframe, VM added VMCenter II to its product line.
[1][3] The chain of acquisitions by which the company changed names and ownership is VM Software, Systems Center Inc,[4] Sterling Software,[5] Computer Associates.
VM Software's mailing address, under Systems Center and Sterling remained 1800 Alexander Bell Drive but addressed as "VM Software Division.