Grails is a full stack framework that aims to greatly simplify the task of building serious web applications for the JVM. The concepts within Grails, like interceptors, tag libraries, and Groovy Server Pages (GSP), make those in the Java community feel right at home. Grails is built on solid open source technologies such as Spring, Hibernate, and SiteMesh, which enhances its potential in the Java space. Spring provides powerful inversion of control and MVC, Hibernate offers a stable, mature object relational mapping technology with the ability to integrate with legacy systems, and SiteMesh manages flexible layout control and page decoration. Grails complements these with additional features that leverage the coding-by-convention paradigm, such as dynamic tag libraries, Grails object relational mapping, Groovy Server Pages, and scaffolding.