This video contains demonstrations on device, as well as screen captures of an "SDK" designed to develop .NET applications on the RG35XX+ line of devices.
Excuse the terrible quality of the video. I do not own any capture devices, and my phone camera is garbage.
It will likely work on any of these stock systems based on ubuntu. It definitely works on every RG35XX+ variant.
The SDK is here:
https://github.com/MrJackSpade/RG35XX.NET
The App Store demo is here:
https://github.com/MrJackSpade/RG35XX-Store
The index.json file within the app store is used as the source for applications, and can be modified through PR to support any project on GitHub, built using the SDK or not. Feel free to message me on github if theres something you would like to add.
All applications currently on the app store (All 3) were developed using the SDK above, and require no additional dependencies to execute on device.