Appropriate technology is a movement (and its manifestations) encompassing technological choice and application that is small-scale, affordable by locals, decentralized, labor-intensive, energy-efficient, environmentally sound, and locally autonomous.
Appropriate Technology PowerPoint — Click to download
DIY Appropriate Technology
Build it Solar is a very unique resource for many projects involving DIY projects that fall into the Appropriate Technology category. It is no longer updated but the information is still incredibly valuable. Projects include passive heating for air and water, passive cooling, solar cooking, energy conservation, photovoltaics, wind, biofuels and more. https://www.builditsolar.com