Scheme (either MIT-Scheme or Gambit) will most likely be my first choice. Forth is a runner-up, but probably too much to stick with.
So far, I have completed every day on my Apple \]\[gs using Applesoft BASIC. I'm going to continue with this until (if) the challenges become too complex for the Apple.
Day 1 will be attempted on an Apple ][ GS, using Applesoft BASIC.
Otherwise, I'll be trying out Forth and Scheme, or will fall back to Clojure if necessary.
**2021:** Nearly all challenges were done in Clojure. I used C++ for a couple of the more challenging ones, and tried Maxima on a part too.
**2020:** Incomplete, just tried a day in Clojure.
**2020:** Incomplete, just tried a day in Clojure.
GitHub