tampio

Yes, that's one of my inspirations! I'm writing a short paper about Kip and I'm citing Perligata there for sure. The closest modern non-English programming language I know that also uses grammar features is Tampio, for Finnish. https://github.com/fergusq/tampio

The Wikipedia list does not mention Tampio, an OO language where programs are written in proper Finnish: https://github.com/fergusq/tampio As an example, here is kertoma.itp (an example routine to calculate a factorial): Pienen luvun kertoma on riippuen siitä, onko se pienempi tai yhtä suuri kuin yksi, joko yksi tai pieni luku kerrottuna pienen luvun edeltäjän kertomalla. Luvun edeltäjä on se vähennettynä yhdellä. Olkoon pieni muuttuja uusi muuttuja, jonka arvo on nolla. Kun nykyinen sivu avautuu, pieneen muuttujaan luetaan luku ja nykyinen sivu näyttää pienen muuttujan arvon kertoman. It sounds basically like a small part of a mathematics lecture.

Another natural language programming language (in Finnish): https://github.com/fergusq/tampio It's technically somewhat amusing as it runs a morphological parser in order to deal with the Finnish word inflection system, which is then utilized as an integral part of the language grammar. As a consequence, since this allows relaxing constraints e.g. on word order, the resulting code does actually read like natural language.