The virtualbox-COM Ruby gem is a library that provides a low level Ruby binding to the VirtualBox API, allowing anyone to control VirtualBox from Ruby code. It can create, destroy, start, stop, suspend, and resume virtual machines, and also list virtual machines, list hard drives, network devices, etc.
Android Binding provides a framework to enable data-binding between view widgets to separate data model in the Android environment. The binding is done through an XML layout file, which stands side-by-side with original Android attribute tags. The framework aims to help decouple user interaction from application logic, and help implement the MVVM pattern. A demo application is available in Android Market.