Social Mapper - A Social Media Enumeration & Correlation Tool by Jacob Wilkin(Greenwolf) - Greenwolf/social_mapper
Kairos - Facial recognition & mood detection API
Amazon Rekognition - Add Amazon's advanced image analysis to your applications.
Facefirst - Facefirst is a software solution that helps users to identify any face digitally, and it can help in replacing legacy forms of physical identity, including plastic cards, etc.
Clarifai - The World's AI
Dermalog Face Recognition - Dermalog Face Recognition is a face recognition software that helps users detect the face of the visitors, including the eyes.