Grails - An Open Source, full stack, web application framework for the JVM
highlight.js - Highlight.js is a syntax highlighter written in JavaScript. It works in the browser as well as on the server.
Vaadin Framework - Vaadin is a web application framework for Rich Internet Applications (RIA).
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.
Bootstrap Table - Bootstrap Table has been designed to reduce development time and to require no specific knowledge from developers.