Notes about the OSP file extension:
Incorrect file associations could be the result of underlying issues within your PC system. As such it is highly recommended to scan your PC for invalid registry entries
, unused processes and other unfavourable system settings to identify slowdown issues.
The OSP file type is primarily associated with 'On-Screen Takeoff' by On Center Software, Inc.. On-Screen Takeoff is software used in creating takeoffs from digital and paper plans.