Imagga

The Imagga API is a set of image understanding and analysis technologies available as a web service that allow you to automate the process of analyzing, organizing and searching through large collections of unstructured images.

You can find the available SDKs here for various languages and platforms.

[Production] version 1.0.0 (released on 2015-12-10 11:53:04 UTC)
Release note: Latest stable version.