gRPC
http://www.grpc.io/
https://github.com/grpc
Motan
支撑微博千亿调用的轻量级RPC框架：Motan
http://h2ex.com/820
Wangle
Wangle — an asynchronous C++ networking and RPC library
https://code.facebook.com/posts/215466732167400/wangle-an-asynchronous-c-networking-and-rpc-library/
TChannel
https://github.com/uber/tchannel
finagle
https://github.com/twitter/finagle
http://www.oschina.net/project/tag/347/xmlrpc
https://www.oschina.net/question/1767531_2150890
https://www.zhihu.com/question/31440152