http://designchoice.org/
This site is dedicated to the sharing of appropriate and intermediate technologies. We hope eventually to learn how to provide for your feedback with comments, suggested improvements, and perhaps some of your own technologies to be shared. Our objective is to deal with devices and methods that are environmentally sustainable, and which can be built and applied as cottage industries or by “street-side” craftspeople, whether in disaster-affected, economically or environmentally stressed communities, or not.