I made a video exploring my compiler for a language that targets a brainfuck-based VM: https://github.com/adam-mcdaniel/sage

I used the language and VM to build a userspace for a custom operating system, writing a shell and a PowerPoint app. https://github.com/adam-mcdaniel/sage-os

I also built a web playground so you can compile and run the language in the browser, with JavaScript interop!! https://adam-mcdaniel.net/sage