Portal 2 – Co-Op Launcher
4-30-11: Initial Release.
Since the release of Portal 2, there has been a lot of good work being done in the community. With so many gamers playing Portal 2 in LAN networks across the Internet, it is no surprise that several people have started work on their own special co-op launchers to make life easier instead of typing cumbersome commands through the console.
Dekart8111 made a special launcher of his own (see above screenshot) that he developed that is released as CS.RIN.RU. How it works is pretty simple. If you are the client, type in the ip of the host and click connect. If you are the host, then select the map in question and just host it after the client is connecting to you.
Pretty simple stuff.
To download the client, and read more about how to use it, see the link below: