Codename One

Codename One is an open source platform/SaaS that allows Java developers to build native (truly native) applications for all mobile devices

Codename One is an open source platform/SaaS that allows Java developers to build native (truly native) applications for all mobile devices (iPhone/iPad, Android, RIM, Windows etc.). It provides full access to the underlying native code, doesn't require dedicated hardware and seamlessly integrated with existing developer tools such as Eclipse/NetBeans etc.