https://github.com/Rosentti/opensteamclient

wtf is this

>Additionally, Valve does not provide any headers or code to go along with these binaries, so this project essentially works because of guesswork by lots of community members and projects (Thank you!) (such as open-steamworks, open-steamworks fork by m4dEngi, SteamTracking, protobufs dumped from the steam client and MiniUTL).

MiniUTL? Didn't knew my fork of Source SDK template library (relicensed by Valve under BSD) would be useful to anyone.