This week I stumbled upon RU as an alternative (with the self hosting option!!! Great!) to [censored] and I really like it. I would also like to see RU Server running on Linux, even it just has the basic functionality like the Relay option (which is what I intent to use it for). My whole server park is running on CentOS and I really would like to keep it like that, but for now there is no other way that to add a Windows server to it :-( .
For now we provide RU Server (as well as Host) only for Windows-based systems. We do have plans to release RU Server for Linux in our future updates, but unfortunately, we can't provide any ETA on its release for now.
Unfortunately, we can't provide any ETA on the release of RU Server for Linux yet. Currently one of our biggest priorities is Host/Agent for Mac/Linux systems (which we recently released an Alpha-version preview of Host for Linux), so even though we do have plans for RU Server for Linux, it will most likely become available only after Host/Agent for Mac/Linux.