APImetrics’ second API Performance Report highlights the importance of considering end-user location and intended platform before selecting a cloud services provider. Facebook’s performance was affected by the September outages, which put it behind Twitter and Tumblr for speed and reliability.
Our API directory now includes 97 cloud APIs. The newest is the Yubikey API. The most popular, in terms of mashups, is the Twilio API. We list 335 Twilio mashups. Below you'll find some more stats from the directory, including the entire list of cloud APIs.