JSONLint - JSON Lint is a web based validator and reformatter for JSON, a lightweight data-interchange format.
ClangFormat - A tool to format C/C++/Java/JavaScript/Objective-C/Protobuf code.
JSONFormatter.org - Online JSON Formatter and JSON Validator will format JSON data, and helps to validate, convert JSON to XML, JSON to CSV. Save and Share JSON
Uncrustify - Banish crusty code with the Uncrustify C/C++/C#/Obj-C/D/Java/Pawn/VALA source code beautifier.
JSON Editor Online - View, edit and format JSON online
Javascript Minifier - Online Javascript Minifier compresses, minifies javascript code to make it more optimized, efficient and it improves website load time by decreasing file sizes.