Atmosphere vs Dropwizard: What are the differences?

Atmosphere: Realtime Client Server Framework for the JVM, supporting WebSockets and Cross-Browser Fallbacks Support. The Atmosphere Framework contains client and server side components for building Asynchronous Web Applications. The majority of popular frameworks are either supporting Atmosphere or supported natively by the framework. The Atmosphere Framework supports all major Browsers and Servers; Dropwizard: Java framework for developing ops-friendly, high-performance, RESTful web services. Dropwizard is a sneaky way of making fast Java web applications. Dropwizard pulls together stable, mature libraries from the Java ecosystem into a simple, light-weight package that lets you focus on getting things done.

Atmosphere and Dropwizard can be categorized as "Frameworks (Full Stack)" tools.

"Cross-Browse" is the top reason why over 2 developers like Atmosphere, while over 23 developers mention "Quick and easy to get a new http service going" as the leading cause for choosing Dropwizard.

Atmosphere and Dropwizard are both open source tools. It seems that Dropwizard with 7.25K GitHub stars and 3.04K forks on GitHub has more adoption than Atmosphere with 3.34K GitHub stars and 720 GitHub forks.