Factor might be a more interesting option than Forth nowadays. It's also a concatenative language, so it captures a lot of what's interesting about Forth, but

Factor might be a more interesting option than Forth nowadays. It's also a concatenative language, so it captures a lot of what's interesting about Forth, but with more of the niceties that we've come to expect in a programming language. https://factorcode.org https://factorcode.org