Java tool for JSON validation via string or file and correction of invalid JSON-like string

Json formatter plugin

JavaFX Json Formatter.

Lightweight, Extensible and Flexible formatter for JSON based on Java.

Json Formatter, Xml Formatter, TR-EN Translator, String encoding.. etc Eclipse plugin

Json Formatter (Prettifier)

JSON formatter and validator written in JavaFX

This parser is primaryly written to generate formated Json and Html file from Json. Please see the demo link below to make sure this is what you are looking for.