Comment by paulmooreparks

XferLang, a data-transfer and configuration language to serve as an alternative to JSON.

https://xferlang.org/

Most obvious features, at first glance, are no commas and no need for escape characters. Other useful features include processing instructions, extensible data-substitution rules, and support for comments. Currently only implemented in .NET; plans are to rewrite the core in Rust and provide language wrappers around that core.