Our API directory now includes 111 semantic APIs. The newest is the RACAI Linguistic API. The most popular, in terms of mashups, is the MusicBrainz API. We list 29 MusicBrainz mashups. Below you’ll find some more stats from the directory, including the entire list of semantic APIs.
Roistr is a project that’s smaller than our typical API feature. It shows the falling barrier to entry in the API world even in a the demanding academic area of natural language processing and semantic analysis. The primary Roistr API function is a “best match” engine. It offers an interesting use case to demonstrate the relevance of the service: take a Twitter username and use tweets from this account to find content most relevant to the user’s interests.