There will be a specific “OpenSense” development kit released soon, allowing Android developers to use HTC's application creation systems to build apps using HTC's own code and APIs. Read all about it over at www.htcdev.com.
It's not launched as yet, and the site looks a little rushed and “bare bones,” but future aspiring HTC Sense developers can register to be informed when it all goes live.
source: Eurodroid