JSON.CPP

Summary from the TLDR Web Dev newsletter

json.cpp is a fast, small, and highly compliant JSON library for C++. It's more performant than alternatives (parsing 3x faster and compiling 10x faster), has a much smaller codebase (10x less code), and has better JSONTestSuite conformance than its competitors. The library uses Google's double-conversion library for efficient floating-point number serialization.