Air Matters - Providing real-time Air Quality Index & Allergy Pollen & Weather Data, as well as Protection Recommendations and Forecast.
Grover - Rent electronics for a month & try it before you buy.
World Air Quality Index - Air quality index for the globe
Lumoid Locals - Peer-to-peer marketplace for short-term gadget rentals
BreezoMeter - Health-focused Environmental Intelligence
Coffeeopia - Social network and marketplace for coffee lovers around the world.