xmlrpc-epi is an implementation of the xmlrpc protocol in C. It provides an easy to use API for developers to serialize RPC requests to and from XML. It does *not* include a transport layer, such as HTTP. The API is primarily based upon proprietary code written for internal usage at Epinions.com, and was later modified to incorporate concepts from the xmlrpc protocol. It passed the xmlrpc validation test suite in December 2000.
WWW: http://xmlrpc-epi.sourceforge.net/