Attempts to be a lower-verbosity lisp than the existing dialects. Has some interesting features, including being a lisp-2 that behaves like a lisp-1 for forms within square brackets.
The author has also made a series of reddit posts talking about the language.
I found TXR to be a nice tool for the situation when:
The problem is that I never seem to use it often enough to entirely remember it (unlike jq which I use regularly). If it had convenient mangling of YAML and JSON it would probably become the first tool I reach for.