The Springer R SDK by rOpenSci allows to communicate with the API to access publishing data. To use, developers can find 3 Api keys available at http://dev.springer.com/ to .rprofile Applications currently using the API include Springer Quotes, Kleenk, and Journal Suggest.
Writeapp.me, the personal online notebook, has announced its first public Writeapp.me API. The company decided to launch the API in attempt to get back to the personal, customizable roots for which the application was originally built.
RESTful services that underpin many Web APIs today should follow design patterns that make any Web API a good Web API. Such design patterns are all about respecting HTTP protocol specifications, respecting good URI design principles, or taking the full advantage of underlying Web infrastructure for Web API's good performance and scalability. If you are interested in such practices or in a cutting-edge research that may impact the future of Web APIs developments, you should look into the series of workshops on RESTful Design.