Open-source alternatives to Json.h

a header-file-only, JSON parser serializer in C++

https://github.com/json-c/json-c is the official code repository for json-c. See the wiki for release tarballs for download. API docs at http://json-c.github.io/json-c/

cJSON is a lightweight library for parsing, creating, and modifying JSON data structures within C applications. It provides a comprehensive set of utilities for transforming raw text into navigable objects, manipulating data fields within collections, and serializing complex structures into formatted or unformatted strings. The library is designed for memory-sensitive and resource-constrained environments, utilizing manual memory management and type-tagged union structures to maintain a minimal footprint. It employs recursive descent parsing and in-place string manipulation to process data ef

A killer modern C++ library for interacting with JSON.

C++ header-only JSON library

Very low footprint DOM-style JSON parser written in portable ANSI C

advanced, flexible JSON manipulation in C

JsonCpp is a C++ library for parsing, manipulating, and generating JSON data. It functions as a data interchange tool that provides a JSON parser to convert formatted text into structured data and a JSON serializer to transform internal data structures back into valid JSON strings. The library features the ability to preserve non-standard JSON comments during the deserialization and serialization process, which supports the management of human-readable configuration files. The project implements a tree-based internal representation for programmatic data access and uses a builder-based config

RapidJSON is a high-performance C++ library used for parsing and generating JSON data. It provides both document object model and stream-based interfaces to transform JSON strings into structured data and vice versa. The library includes a JSON schema validator to verify that documents conform to predefined rules and a Unicode transcoder for converting strings between UTF-8, UTF-16, and UTF-32 encodings. It also supports relaxed parsing for non-standard JSON containing comments or trailing commas. Additional capabilities cover JSON pointer navigation for locating specific values and string s

A fast streaming JSON parsing library in C.

A JSON parser in C++

A tiny JSON library for C++11.

QJson is a qt-based library that maps JSON data to QVariant objects.

JSON & BSON parser/writer

Lightweight, extremely high-performance JSON parser for C++11

A C++, header-only library for constructing JSON and JSON-like data formats, with JSON Pointer, JSON Patch, JSON Schema, JSONPath, JMESPath, CSV, MessagePack, CBOR, BSON, UBJSON, toon-format

Very simple C++ JSON Parser

A simple class for parsing JSON data into a QVariant hierarchy and vice versa.

C library for encoding, decoding and manipulating JSON data

A very sane (header only) C++14 JSON library

An implementation of the MessagePack serialization format in C / msgpack.orgC

Simple .INI file parser in C, good for embedded systems

Tiny, zero-allocation JSON serializer written in ANSI C

JSON parser and generator for C/C++ with scanf/printf like interface. Targeting embedded systems.

simdjson is a high-performance JSON parser that utilizes SIMD instructions to process gigabytes of data per second. It functions as a SIMD JSON parser, a multithreaded NDJSON processing library, a UTF-8 validation engine, and a tool for JSON minification and string building. The project focuses on high-throughput data processing, enabling the ingestion of massive JSON volumes and the verification of UTF-8 encoding standards. It includes dedicated capabilities for constructing JSON strings with optimized memory usage and removing unnecessary whitespace from documents to reduce file size. The

a JSON parser and printer library in C. easy to integrate with any model.