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

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

Guava is a suite of core and expanded libraries that include

The Apache Commons IO library contains utility classes, stream implementations, file filters,

Netty is a NIO client server framework which enables quick and easy development of network applications such as protocol ...

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

Apache Commons Lang, a package of Java utility classes for the classes that are in java.lang's hierarchy, or are ...

Apache Commons Email provides an API for sending email, simplifying the JavaMail API.

High-level API that greatly simplifies using ZooKeeper.

All of the recipes listed on the ZooKeeper recipes doc (except two phase commit).

Unit testing utilities.

Apache HttpComponents Client

Apache HttpComponents AsyncClient

Apache HttpComponents Client

Kafka client library for building producers and consumers that interact with Apache Kafka clusters for high-throughput ...

The Apache Log4j 1.x Compatibility API

API for Apache Log4J, a highly configurable logging tool that focuses on performance and low garbage generation. It has ...

Implementation for Apache Log4J, a highly configurable logging tool that focuses on performance and low garbage ...

The Apache Log4j SLF4J 2.0 API binding to Log4j 2 Core

The Apache Log4j Commons Logging Adapter

ZooKeeper server

Mockito mock objects library core API and implementation

Lombok is a Java library that provides annotations to simplify Java development by automating the generation of ...

Quartz is a job scheduling library that can be embedded in java applications with support for transactions, persistence, ...

API for SLF4J (The Simple Logging Facade for Java) which serves as a simple facade or abstraction for various logging ...

Starter for testing Spring Boot applications with libraries including JUnit Jupiter, Hamcrest and Mockito

Starter for building web, including RESTful, applications using Spring MVC. Uses Tomcat as the default embedded ...

YAML 1.1 parser and emitter for Java

Jedis is a blazingly small and sane Redis java client.