One of the bigger challenges with anything involving APIs is scale. As the number of APIs proliferate, the scalability demands from a management perspective become increasing untenable. Nowhere does that become more apparent than when dealing with mobile computing applications.
So far more than 650 APIs have been added to the ProgrammableWeb directory in 2014 and some new trends are starting to emerge. Some recent popular categories remain near the top of the charts. The financial APIs that put APIs in the mainstream continue to expand, adding about 50 new APIs in the first quarter. A few other categories were less consistent and had extreme rises or falls in popularity.