DroidAR Tools for Android
This morning I posted about the Absolute Engine for the iPhone which prompted a response from Simon who has been working on the DroidAR project. DroidAR is an OpenGL framework for Android developers who want to add location based or marker based augmented reality functionality to their mobile applications.
You can find out more about the project here: http://code.google.com/p/droidar/
The website contains a number of examples including a rather handy installing and getting started guide to help you get up to speed.