Fastjson is a JSON processor (JSON parser + JSON generator) written in Java

Old JAXB Binding Compiler. Contains source code needed for binding customization files into java sources.

Old JAXB Runtime module. Contains sources required for runtime processing.

General data-binding functionality for Jackson: works on core streaming API

Core Jackson processing abstractions (aka Streaming API), implementation for JSON

Think big, start small, scale fast.

JUnit Jupiter is the API for writing tests using JUnit 5.