The packages that provide these libraries and tools are contained within the SCOX Components scox-uw package set on UnixWare and the equivalent on OpenServer.

If you are interested in web services programming, a good place to start is with the package scoxldemo, which places simple web services client program demos for the five languages into the directory /usr/lib/scox/language_demos/. This will give you a good start on what web services calls look like from each language, and on what commands are needed to build and run them.
jls@sco.com