Backend Technologies August 18, 2017by Vijay Shukla Groovy Groovy is a feature-rich, agile and dynamic language for the Java Virtual Machine. Grails Grails is an Open Source, full stack, web application framework for the JVM. Spring Boot It is a Spring module which provides Rapid Application Development feature to Spring frame. Ratpack Ratpack is a set of Java libraries that facilitate fast, efficient, revolvable and well-tested HTTP applications. Vertx Vert.x is a tool-kit for building reactive applications on the JVM.