If you also require: Authentication and Authorization, Rate Limiting, Versioning or HTTP Logging please note that Atom Hopper works well with Repose
Simple. Atom Hopper is easy to use. It can be deployed as a single WAR file into any Servlet container. Most applications can use Atom Hopper with minimal configuration to specify the Atom Workspaces and the Content storage.
Scalable. Atom Hopper is very scalable because it is designed to be stateless, allowing state to be distributed across the web.
Layered. Atom Hopper allows any number of intermediaries, such as proxies, gateways, and firewalls so one can easily layer aspects such as Security, Compression, etc. on an as needed basis.
Built on a strong foundation. It is built on top of several open source projects such as Apache Abdera (a Java-based Atom Publishing framework), Hibernate, and MongoDB.
Flexible. Atom Hopper currently supports the following relational databases: H2, PostgresSQL, and MySQL (plus others that work with Hibernate) as well as the NoSQL solution MongoDB
High performance. Atom Hopper can handle high loads with high accuracy.
Improving. Atom Hopper is under active development.