Package: xmlrpc-c-apps

"xmlrpc-c-apps" package binaries on CentOS:

/usr/bin/xml-rpc-api2cpp /usr/bin/xmlrpc /usr/bin/xmlrpc_cpp_proxy /usr/bin/xmlrpc_pstream /usr/bin/xmlrpc_transport

You may install this package on CentOS with yum install xmlrpc-c-apps