April 26, 2013
Folks interested in "open knowledge" should check out CKAN (Comprehensive Knowledge Archive Network) CKAN is the Comprehensive Knowledge Archive Network, a registry of open knowledge packages and projects (and a few closed ones).
GoodGuide is a service that we have been using as a family for a while. It attempts to analyze a product holistically & scientifically to produce a simple 1 to 10 rating of its "goodness." I am personally satisfied to see that the GoodGuide API will share this data with the world.
Factual provides easy access to the data that drives mobile, web, and enterprise applications. Factual recently improved upon its 58 million points of interest when it enhanced its Restaurants Data. Factual added over 400,000 restaurants to its database (bringing the total count over 1.2 million) and expanded the attributes available. The company provides the Factual API that enables developers to access this data.