Xbase++

A Clipper/xBase compatible database development system that was originally a dual OS/2 - Windows application but is by now a MS Windows only program. The company stopped supporting OS/2 with version 1.3 and removed all references, support documents and updates for the system from their homepage.

Version 1.2 of xBase++ for OS/2 is close enough to standard xBase/Clipper de-facto standards that you can move code developed for it to a modern system like Harbour without too much difficulty.