JSON

http://www.json.org/

Javascript Object Notation

Developed by Douglas Crockford, of Javascript: The Good Parts fame

Hip alternative to XML for data sharing.

Example: http://www.archive.org/details/uso20110129?output=json

Consider: https://addons.mozilla.org/en-US/firefox/addon/jsonview/

Commandline

See: https://shapeshed.com/jq-json/