Formatting library as an alternative to C stdio and C++ iostreams
An implementation of the TLS/SSL protocols
Explains and suggests fixes for compile-time errors for C, C++, C#, Go
JSON implementation for Ruby
Development toolkit for Web Services and XML data bindings for C & C++
Compilable markdown for linear algebra
Fast C/C++ HTML 5 Parser
Another C++ based JSON Library (/w Parser/Generator/Navigator)
An HTML5 parsing library in pure C99
FlatBuffers Compiler and Library in C for C