Our API directory now includes 531 reference APIs. The newest is the CanLII API. The most popular, in terms of mashups, is the GeoNames API. We list 88 GeoNames mashups. Below you'll find some more stats from the directory, including the entire list of reference APIs.
Every once in awhile we stumble across an API that is “watercooler talk” worthy. Often these APIs are revolutionary in the way that they affect how an industry operates, other times they are just really cool and waste a lot of our time. This past week's addiction was the Yoda Speak API.