Ratpack a toolkit for creating high performance web applications built on Java and Netty.
Ratpack is a set of Java libraries that facilitate fast, efficient, evolvable and well tested HTTP applications.
It is built on the highly performant and efficient Netty event-driven networking engine. The API is optimized for Groovy and Java 8.
Optional Google Guice integration provides a foundation for scaling your application in size in a managed way.
Optional Gradle build time support makes building and testing applications a breeze.
Ratpack focuses on allowing HTTP applications to be efficient, modular, adaptive to new requirements and technologies, and well-tested over time.
Ratpack Introduction provides a quick comparison with similar products.