OpenXava - OpenXava is a Web Java Framework for Rapid Development of Enterprise Applications.
code-prettify - Code Prettify is an embeddable script that makes source-code snippets in HTML prettier.
jHipster - JHipster is a development platform to quickly generate, develop, & deploy modern web applications & microservice architectures.
Apache Tika - Apache Tika toolkit detects and extracts metadata and text from different file types.
Spring Framework - The Spring Framework provides a comprehensive programming and configuration model for modern Java-based enterprise applications - on any kind of deployment platform.
Apache Archiva - Apache Archiva is an extensible repository management software.