1)   TAS Professional 5 Powered by CAS 5.14
TAS Professional 5 is designed to be a complete application development tool for DOS systems. It provides application building tools for the programmer new to application development, as well as the seasoned developers.

 2)   TAS Professional 7 Powered by CAS 7.1 Build 9
TAS Professional is designed to be a complete application development tool for graphical operating systems. It provides application building tools for the programmer new to application development, as well as the seasoned developer.