JSON5 – a superset of JSON with comments, multiline string, trailing comma, etc.

https://cuelang.org is a unified logical language that replaces the need for all these data format enhancements and tools.

Definitely my new favorite language and tech, super powerful and solves a ton of problems all at once.

It's quickly improving, and while it is immature, I think it's safe to start building with. Docs need to be expanded once things settle in the next few months.