[eeue56]

Mine is Derw: https://www.derw-lang.com/

It's a programming language I created after frustration with TypeScript and Elm, in order to write better type-safe code in a functional manner. There's seemless interop between Derw and TS/JS, making it more useful for working with TS codebases than Elm. It's quite production ready though there are a few things left to implement, but so far there's features like:

- A formatter

- A test framework

- A benchmarking framework

- A web framework for writing apps

- VScode extensions

- Type checking

- Output generation for TS, JS, English, Derw and Elm

- A Gitbook: https://docs.derw-lang.com/

I also have a very active blog where I write about Derw or programming in general: https://derw.substack.com/ and the Twitter for staying up to date is https://twitter.com/derwlang