The SOPE appserver package is a framework for developing web applications and services. The name "SOPE" (SKYRiX Object Publishing Environment) is inspired by ZOPE ;-)
SOPE is released under LGPL.
much more to be written ...
The sope-appserver depends on (and extends) sope-core and sope-mime, so you need:
A tutorial for the xmlrpc_call tool is available in the OGo / XML-RPC section: xmlrpc_call.