In order to play Supreme Commander with other players, you must download one of the following clients. As an open source community, we provide two different clients that provide SIMILAR functionality.
Downlord's FAF client is a more active version of the client, and is still in BETA stage. Whereas, the Forged Alliance Forever client
is not as active, but is stable. We currently recommend that you use the stable Forged Alliance Forever client.
If you would like to know more specific information about what each client provides, then please view the official overview on Github.