Convention-over-configuration, sensible defaults, opinionated APIs, and the Groovy language combine to make Grails easy to learn for Java developers.
Grails is built on top of Spring Boot and leverages Spring Boot's time-saving features, such as Spring-powered dependency injection.
Smooth Java Integration
Grails seamlessly and transparently integrates and interoperates with Java, the JVM, and existing Java EE containers.
Groovy Based
Apache Groovy is a language for the Java platform designed to enhance developers' productivity. It is an optionally-typed and dynamic language but with static-typing and static compilation capabilities.
Plugins
Developers can build plugins that extend and enhance Grails, or they can access existing plugins published by a vibrant plugin community.
View Technologies
Technologies such as GSP, JSON Views, and Markup Views help developers effortlessly generate HTML, JSON and XML.
Seamless GORM Integration
Grails seamlessly integrates with GORM, a data access toolkit that provides a rich set of APIs for accessing relational and non-relational data. GORM also includes implementations for Hibernate (SQL), MongoDB, Cassandra, and Neo4j.
Open Source
Grails is an Open Source Apache 2 License project.
REST Api's, REACT, ANGULAR
With the use of application profiles, including React and Angular, Grails allows developers to build REST APIs or modern web applications with a JavaScript frontend.
IDE Support
Developers can access support at any time via IDEs and text editors, such as Intellij IDEA, Eclipse, Sublime, and Textmate.