Red Hat Developer Studio is a set of eclipse-based development tools that are pre-configured for JBoss Enterprise Middleware Platforms and Red Hat Enterprise Linux.
HiberObjects is an Eclipse plugin for object oriented design of classes and unit tests for Java Persistence API or Hibernate. PropertyChange support and DTO's for Google Web Toolkit (GWT) can also be generated.
Eclipse is an open source community whose projects are focused on building an open development platform comprised of extensible frameworks, tools and runtimes for building, deploying and managing software across the lifecycle. A large and vibrant ecosystem of major technology vendors, innovative start-ups, universities, research institutions and individuals extend, complement and support the Eclipse platform.