On Center Software’s On-Screen Takeoff® (OST) started the industry in 1994. OST effectively scales to support small contractors and global construction enterprises. The takeoff is the visualization of what has been defined as the project’s scope. The on screen takeoff is the job’s benchmark for estimating. With OST, contractors view electronic plans from anywhere—office or field. From plan viewing to quantity measurements to estimating to project management—it all starts with OST. On Center Software’s OST integrates with estimating, accounting, and planrooms. If it’s colored, it’s counted.