50 Useful Machine Learning & Prediction APIs, 2018 Edition

An API is a set of routines, protocols and tools for building software applications. For KDnuggets' third edition of this post, we removed discontinued APIs from the list of 2017, and updated it with new elements. Within each group of applications, the list is in alphabetical order. API overview is based on information as it has appeared on its URL as of 16-April-2018. Check out where these APIs are put into use!