And if you liked that http://www.hugi.scene.org/compo/compoold.htm

And something I found useful https://www.muppetlabs.com/~breadbox/software/tiny/teensy.ht...

It really is quite amazing how small you can make things when you try. Then you realise you're wasting most of a disc sector, and the thing you have is unportable and unmaintainable. But still, being able to look at a binary and know what every byte does, being unconstrained by the rules of a language is liberating.