It's a simple Ruby Datumbox Wrapper. It has only one class, called Datumbox (datumbox.rb), which makes all the work for you. It uses the RestClient library to make remote calls to the Datumbox API. This class has one method to each available service provided by the Datumbox.
The Google Maps API naturally has a rich history on ProgrammableWeb. Over the last year or so, Google has released additional maps-related APIs as separate services. One of the latest ones is the Google Distance Matrix API. This allows a developer to submit a matrix of locations, as origins and destinations, and get a list of the distances in return.
Merriam-Webster, the household name in dictionaries, launched the Merriam-Webster Dictionary API last week. The most trusted name in dictionary/thesaurus references has decided to make its resources available to developers through the new API. Merriam-Webster is making eight different resources available via the API.