Re: I read the title and sub-head...
Another non believer.
Clipper was a fantastic tool, a geat way of making DOS database applications, which were fast to use, fast to write, reliable and flexible.
As to clone, no, just the natural progression of XBase.
Clipper (or CA-Clipper) was XBase, tons of tools, some excellent replacable database drivers, and still many programs in use.
All those great addons, Blinker, Funky (sp), Novlib, Advantage XBase Server, things like this made for some pretty powerful applications.
We were using serial comms libraries, Netware task libraries, client server libraries, lots of links to C as well, with our own C code.
Clipper was the pinnacle of Xbase not just a clone