MRO Software (Maintenance, Repair, & Operation), Inc. - formerly known as PSDI, was a software firm based in Bedford, Massachusetts, which published Maximo, an Enterprise Asset Management system in the market.
The company was founded in 1968 by Bob Daniels, and was headed by Norman "Chip" Drapeau for the last half-decade until mid-2006 when it was acquired by IBM.
On August 3, 2006 the company was acquired by IBM for cash consideration of $739 million.
On April 1, 2007 MRO Software ceased to exist as the Transfer of Trade to IBM took place.