Very efficient JSON parsing, writing and accessing library for C++. Currently used in a major Point of Sale application among other projects as the main library for using JSON and XML. Designed to allow use of JSON in C++ in a manner similar to other languages like Javascript and Python. For example int iValue = jDocument["key"]["subKey"]._int();
fast json library cmake cross-platform cpp efficient optimized json-parser xml-parser cpp17 xml-document json-converter json-document cpp20 xml-converter xml-json-converter json-writer xml-writer json-xml-converter
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Updated
Aug 17, 2026 - C++