Metrics is a Java library which gives you unparalleled insight into what your code does in

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

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

Core annotations used for value types, used by Jackson data binding package.

Guava is a suite of core and expanded libraries that include

The Async Http Client (AHC) classes.

Core API and libraries of hamcrest matcher framework.

Core API and libraries of hamcrest matcher framework.