I have found LibreX/LibreY to be quite good, as long as you use a stable instance

BQN is a newer array based language (similar to APL) where you manipulate arrays with different functions and modifiers and compose the modifiers with more modifiers (combinators). Uiua is the same but instead of combinatorics you have a stack that you can manipulate, so it’s a stack based, array oriented language. Here is a nice video about Uiua, and here is a video comparing the two.

To add to others’ responses, array-based languages such as APL, BQN and J are very different from most common languages

For getting actual stuff done: Rust For playing around: Uiua or BQN

Simplex chat also has Haskell and Typescript apis iirc

Tbh I’m not sure, it might’ve also changed during these past 3 years so 🤷‍♂️

Here’s something you might find interesting “Why not matrix” Alternative onion url

Obligatory link to Why not signal