Due to its design, dot42 supports the entire Android API and part of the .NET API. The .NET classes are handcrafted on top of the Android/Java API. Shortly, we will be moving the .NET API implementation to github. It will be licensed under the Apache License, version 2.0. Note that this does not apply to the tools themselves.
This should allow you and others to help us extend the supported subset of the .NET API. Initially, the repository will be private and a select group will be allowed access. After things ironed out, it becomes public. Should not take longet than a couple of weeks. Anyone is invited to request early access (frank at dot42.com).