Spring Boot helps you to create Spring-powered, production-grade applications and services with absolute minimum fuss.

Free and Open Source, Distributed, RESTful Search Engine

Spring Framework

Google core libraries for Java

RxJava – Reactive Extensions for the JVM – a library for composing asynchronous and event-based programs using observable sequences for the Java VM.

Jenkins automation server

Hystrix is a latency and fault tolerance library designed to isolate points of access to remote systems, services and 3rd party libraries, stop cascading failure and enable resilience in complex di…

光 HikariCP・A solid, high-performance, JDBC connection pool at last.

IntelliJ IDEA & IntelliJ Platform

The official home of the Presto distributed SQL query engine for big data

Vert.x is a tool-kit for building reactive applications on the JVM

Very spicy additions to the Java programming language.

Guice (pronounced 'juice') is a lightweight dependency injection framework for Java 11 and above, brought to you by Google.

A scalable web crawler framework for Java.

A Java API for generating .java source files.

The Clojure programming language

Feign makes writing java http clients easier

Flyway by Redgate • Database Migrations Made Easy.

A simple expressive web framework for java. Spark has a kotlin DSL https://github.com/perwendel/spark-kotlin

Java JsonPath implementation

A damn simple library for building production-ready RESTful web services.

A programmer-oriented testing framework for Java — ⚠️ maintenance mode

📈 Capturing JVM- and application-level metrics. So you know what's going on.

A fast dependency injector for Android and Java.

A tool for mocking HTTP services

Java DSL for easy testing of REST services

Runtime code generation for the Java virtual machine.

Code for Quartz Scheduler

jOOQ is the best way to write SQL in Java

Generate Java types from JSON or JSON Schema and annotate those types for data-binding with Jackson, Gson, etc