To add to this there's: http://www.oracle.com/technetwork/developer-tools/adf-mobile/overview/index.html
A Java & HTML5 Based Framework for Developing
Oracle ADF Mobile enables developers to build and extend enterprise
applications for iOS and Android from a single code base. Based on a
hybrid mobile architecture, ADF Mobile supports access to native
device services, enables offline applications and protects enterprise
investments from future technology shifts.
