Shadowsocks - A fast tunnel proxy that helps you bypass firewalls
V2Ray - A platform for building proxies to bypass network restrictions.
GAppProxy - GAppProxy is an open source HTTP Proxy software runs on Google App Engine.
GoAgent - GoAgent is a gae proxy forked from gappproxy/wallproxy.
OpenVPN - OpenVPN - The Open Source VPN
WallProxy - WallProxy is an open source Proxy software runs on Google App Engine.