Да Вы можете Переносить на любой сервер приложений / Tomcat, работающий на JDK 5 или выше.
Особенности
* Fully certified JAX-RS implementation
* Portable to any app-server/Tomcat that runs on JDK 5 or higher
* Embeddedable server implementation for junit testing
* Client framework that leverages JAX-RS annotations so that you can write HTTP clients easily (JAX-RS only defines server bindings)
* Client "Browser" cache. Supports HTTP 1.1 caching semantics including cache revalidation
* Server in-memory cache. Local response cache. Automatically handles ETag generation and cache revalidation
* Rich set of providers for: XML, JSON, YAML, Fastinfoset, Multipart, XOP, Atom, etc.
* JAXB marshalling into XML, JSON, Jackson, Fastinfoset, and Atom as well as wrappers for maps, arrays, lists, and sets of JAXB Objects.
* GZIP content-encoding. Automatic GZIP compression/decompression suppport in client and server frameworks
* Asynchronous HTTP (Comet) abstractions for JBoss Web, Tomcat 6, and Servlet 3.0
* Asynchronous Job Service.
* Rich interceptor model.
* EJB, Seam, Guice, Spring, and Spring MVC integration
Ссылка: http://jboss.org/resteasy См. OverView -> Features.