A fast SQL database that can run embedded or a server mode with support for transactions, encryption, full search, etc. Storage can be disk-based or in-memory.

Implementation for Apache Log4J, a highly configurable logging tool that focuses on performance and low garbage generation. It has a plugin architecture that makes it extensible and supports asynchronous logging based on LMAX Disruptor.

Spring Boot auto-configuration attempts to automatically configure your Spring application based on the jar dependencies that you have added.

Spring JDBC provides an abstraction layer that simplifies code to use JDBC and the parsing of database-vendor specific error codes.

Spring Boot makes it easy to create stand-alone, production-grade Spring based Applications that you can 'just run'. It takes an opinionated view of the Spring platform and third-party libraries so you can get started with minimum configuration.

HikariCP is a 'zero-overhead' production ready JDBC connection pool.

Package with classes and convenience methods that assist with functional testing of Play applications.

Spring Boot Developer Tools

Flyway is an open-source database migration tool that strongly favors simplicity and convention over configuration

Dropwizard Test Helpers

Legacy (i.e. pre-Galleon) feature pack providing full platform Jakarta EE functionality