JSON that's part of C++
Lightweight and flexible command-line JSON processor
An open source RDP server
Open source PDF editor
Skin changer for League of Legends (LOL)
A JSON viewer plugin for Notepad++
JSON parser in standard C
Multi-format (PDF, EPUB, MOBI, FB2, CHM, XPS, DjVu) reader for Windows
TeX previewer for Mac OS X
Simple REST and HTTP API Client for .NET
TeXstudio is a fully featured LaTeX editor
An embedded web server
the MiKTeX source code
The Apache Kafka C/C++ library
A fast and robust web server and application server for Ruby
Google's data interchange format
10x faster string search, split, sort, and shuffle for long strings
An extensible Markdown Editor, Viewer and Weblog Publisher for Windows
The Ray Tracing in One Weekend series of books
Universal serialization engine
Formatting library as an alternative to C stdio and C++ iostreams
JSON library for Arduino and embedded C++. Simple and efficient
A library that can help you with generating PDF documents
pmacct is a small set of multi-purpose passive network monitoring tool
A fast DVI, EPS, and PDF to SVG converter