OpenXava - OpenXava is a Web Java Framework for Rapid Development of Enterprise Applications.
Oracle TimesTen - TimesTen is an in-memory, relational database management system with persistence and...
jHipster - JHipster is a development platform to quickly generate, develop, & deploy modern web applications & microservice architectures.
Datomic - The fully transactional, cloud-ready, distributed database
Spring Framework - The Spring Framework provides a comprehensive programming and configuration model for modern Java-based enterprise applications - on any kind of deployment platform.
Matisse - Matisse is a post-relational SQL database.