An object-oriented client/server development system originally from Platinum Technology, Inc., Oakbrook Terrace, IL (www.platinum.com). When Computer Associates acquired Platinum in 1999, ObjectPro was folded into the Aion product family and emerged in the application called CleverPath Aion Business Rules Expert. ObjectPro's notable features included its own programming language and the generation of executable programs for Windows, HP/UX and Solaris. It supported the major databases and also provided an interpreted mode for development.