I think it depends on how hard-core you want to go. Fennel runs in 2K of ram https://news.ycombinator.com/item?id=31029478 https://news.ycombinator.com/item?id=

I think it depends on how hard-core you want to go. Fennel runs in 2K of ram https://news.ycombinator.com/item?id=31029478 https://news.ycombinator.com/item?id=31029478 Picbit ran in 256bytes, it's descendent is slightly larger https://github.com/stamourv/picobit https://github.com/stamourv/picobit Staapl compiles scheme to Forth, to also run on the PIC18 https://www.concatenative.org/wiki/view/Staapl https://www.concatenative.org/wiki/view/Staapl Of course there is also Sectorlisp, the smallest language out there in 436bytes, 64k ram https://justine.lol/sectorlisp2/ https://justine.lol/sectorlisp2/