A Fantasy Console, designed to run on real hardware and with a strong focus on UX and design.
First, you will need to download the emulator and SDK from the releases page.
The macOS version probably needs some tinkering to run, because it's not notarized by Apple.
After extracting the .zip file you can run the nibble executable.
You will be greeted by the shell.
You can type the name of any software to start it.
Be sure to check out the documentation.