I wanted to use YAML but there is not a single mature YAML library for Erlang. I know there are a few JSON libraries, but was wondering which is the most mature?
Trapexit offers a really cool search feature for Erlang projects.
Lookup for JSON there, you'll find almost 13 results. Check the dates of the latest revisions, the user rating, the project activity status.
UPDATE: I've just found a similar question n StackOverflow. Apparently, they are quite happy with the erlang-json-eep-parser parser.