Wikipedia
OpenConnect
OpenConnect is an open-source software application for connecting to virtual private networks (VPN), which implement secure point-to-point connections.
It was originally written as an open source replacement for Cisco's proprietary AnyConnect SSL VPN client, which is supported by several Cisco routers. , the OpenConnect project also offers an AnyConnect-compatible server, and thus offers a full client-server VPN solution. The OpenConnect client has added support for Juniper Networks' SSL VPN in version 7.05 as well.