New releases are now available (5/3/13):
OST 3.8.3
QB 4.91.2
Brand new licensing, features & functionalities have been announced.
Public Downloads
The downloads below are available to the general public and do not require any activation codes.
Drivers & Add-In's
Sentinel Driver (Dongle):
Sentinel Driver Installation Instructions Download Now
GTCO Tabletworks: Download Now
MDAC 2.80
Microsoft Windows® Component: Download Now
Windows Installer 3.1: Download Now
Windows XP Service Pack 2 and earlier and Windows 2000 may require installation of the Windows Installer. Windows Installer 3.1 cannot be installed on machines running Windows XP Service Pack 3.
Windows Installer 4.5: Download Now
Windows XP Service Pack 3 may require installation of the Windows Installer 4.5.
Quick Bid 3.61 to 4.0 Database Converter: Download Now
Free PlanViewer
The On-Screen Takeoff PlanViewer is a limited version of the On-Screen Takeoff Professional software.
Participating planrooms allow you to download and view multiple file types such as TIFF, PDF, DWF, DWG, JPEG images, and most CAD documents. With On-Screen Takeoff PlanViewer, you can easily navigate through these drawings, measure a distance or area, count objects, zoom in on particular features, place dimensions, write text, and print drawings directly from the viewer. All for free!