Iโm looking for a custom online subsystem which I could host by myself. Is there anything ready to use out there or do I have to implement it myself? if the latter is the case, is there a tutorial or some documentation out somewhere?
If you mean custom online subsystem it wonโt be that easy of a task. Source look through that forum post for reference I myself referenced it including this page. Also look through these UE wiki pages since it does talk about Online Subsystem and my guess according to the user post on the forum you should be able to create scale down version of your own Online Subsystem.