The Gravatar .NET SDK by Gravatar allows to communicate with the API to access avatar data. With the SDK, developers can create, delete, and select an avatar photo without leaving an application. Resources include addresses, user image, and URL.
Animetrics, a leading developer of 2D to 3D face recognition and face creation solutions, provides the Animetrics Face Recognition that can be used to detect human faces in pictures and match them against a set of known or documented faces. This tool is specifically useful for applications for the fashion and online entertainment industries, or for law enforcement or military intelligence where accurate identity resolution is a necessity.
It's been a quick transition from app provider to API provider for photo-sharing Instagram and its Instagram API. Today the company launched a new Instagram Real-time API, which provides access to the site's content via webhooks as photos are added that match pre-determined criteria.