We at panStamp (http://www.panstamp.com) are actively promoting the development of plugins and bindings for different Home Automation software applications. For those among you that don't know what panStamp is, it is an open-source low-power wireless platform programmable from the Arduino IDE.
Wiki page: https://github.com/panStamp/panstamp/wiki
The nice thing about Indigo is that it is written in Python. Since we already have a Python module for panStamp and SWAP (our open wireless protocol), integration with Indigo should be very straightforward for anyone with a precedent plugin-development experience.
In exchange, we offer a free hardware kit with USB gateway,, sensors and actuators. Is anyone interested?
Daniel.