I focus on the Raspberry Pi because I use it myself and there are currently no easy-to-use solutions. For me it's great that this little system runs completely independently of my main computer and controls my entire QO-100 station. That's my main motivation.
In addition, the memory card images and the same hardware make it easy for me and the users to get a running system without major problems. If someone wants to adopt the approach to other systems, you are welcome to do this. I have not planned this. Because I'am very happy with my Raspberry.
Note: All you need (source code etc.) you can find on raspberry pi image. But do not expect too much. I'm a bad programmer. Most important for me is that it works