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

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

Change data capture for a variety of databases. Please log issues at https://github.com/debezium/dbz/issues.

A collection of source code generators for Java.

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

Flyway by Redgate • Database Migrations Made Easy.

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

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

configuration library for JVM languages using HOCON files

GraphQL Java implementation

vʌvr (formerly called Javaslang) is a non-commercial, non-profit object-functional library that runs with Java 8+. It aims to reduce the lines of code and increase code quality.

Picocli is a modern framework for building powerful, user-friendly, GraalVM-enabled command line apps with ease. It supports colors, autocompletion, subcommands, and more. In 1 source file so apps …

Unified Queries for Java

Distributed lock for your scheduled tasks

Java annotation processor to create immutable objects and builders, for records too. Sweep boilerplate code under the rug!

Fluent testing assertions for Java and the JVM

Unirest in Java: Simplified, lightweight HTTP client library.

Intelligent object mapping

A distributed data integration framework that simplifies common aspects of big data integration such as data ingestion, replication, organization and lifecycle management for both streaming and bat…

Dozer is a Java Bean to Java Bean mapper that recursively copies data from one object to another.

The Jdbi library provides convenient, idiomatic access to relational databases in Java and other JVM technologies such as Kotlin, Clojure or Scala.

Speedment is a Stream ORM Java Toolkit and Runtime

Command line parsing framework for Java

The simple, stupid random Java beans/records generator

Hawtio web console helps you manage your JVM stuff and stay cool!

ZeroTurnaround ZIP Library

sql2o is a small library, which makes it easy to convert the result of your sql-statements into objects. No resultset hacking required. Kind of like an orm, but without the sql-generation capabilit…

Terminal-based progress bar for Java / JVM

Support alternative markup for Apache Maven POM files

DDD-CqRS sample v2.0 project that helps you with starting out advanced domain modeling using Spring, JPA and testing