There is. It's called HOCON and I'm surprised it's not mentioned yet: https://github.com/lightbend/config/blob/master/HOCON.md https://github.com/lightbend/con

There is. It's called HOCON and I'm surprised it's not mentioned yet: https://github.com/lightbend/config/blob/master/HOCON.md https://github.com/lightbend/config/blob/master/HOCON.md HOCON is the "human optimised config object notation" and is a superset of JSON. All valid JSON is valid HOCON but then it goes and adds lots of other features specifically designed for writing usable config files.