A little blogpost this morning, not actual software, but software desiderata: https://dustycloud.org/blog/guile-steel-proposal/
I'd love to see something like the above happen. I'd love to help make it happen. So this is more of a call to arms than anything else. Can we have a "systems lisp"? Can we do better than Rust? Let's put some interesting things on that compiler tower of ours!