JSON that's part of C++
C++ Qt ORM (Object Relational Mapping) and ODM library
Open source PDF editor
A C++ library for interacting with JSON
Simple REST and HTTP API Client for .NET
The Apache Kafka C/C++ library
An embedded web server
Formatting library as an alternative to C stdio and C++ iostreams
A library that can help you with generating PDF documents
JSON library for Arduino and embedded C++. Simple and efficient
Extremely fast, in memory, JSON and interface library for modern C++
Library to parse and emit YAML, and do it fast
A collection of .NET libraries for rendering mathematical formulae
Lexbor is development of an open source HTML Renderer library
A modern C++ library for reading, writing, and analyzing CSV
Universal serialization engine
A tiny boost library in C++11
The fastest JSON library in C
Ultimate Javascript Object Signing and Encryption (JOSE)
C++ Discord API Bot Library - D++ is Lightweight and scalable
Fast, convenient JSON serialization and parsing in C++
Jwt.Net, a JWT (JSON Web Token) implementation for .NET
Web Framework to build REST APIs, Webservices or any HTTP endpoint
Strongly typed JSON library for Rust
simplejson is a simple, fast, extensible JSON encoder/decoder