The ORCA Planning and Utility System (OPUS) started out as an interactive military aircraft mission planning tool. OPUS technology has expanded greatly since the initial coding in 1989. It remains true that the fast and accurate autorouting and analysis functions that are at the core of this software make OPUS useful for mission effectiveness and survivability studies. The software also performs force level planning as well as generating terrain aware threat avoiding individual sortie routes. OPUS optimizes in the target area including sensor pointing and weapon release maneuvers. OPUS includes utility functions for manipulating terrain information, threat data, weapon characteristics, vehicle performance data, and route plans.

OPUS is used for both operational and analytical applications. The incorporation of functionality to parse Air Tasking Orders (ATO) - sometimes referred to as the Hill ATO Defragger - has made OPUS a valuable tool for the USAF Combat Air Force which has licensed it for use at multiple wings.