Google Vision AI - Cloud Vision API provides a comprehensive set of capabilities including object detection, ocr, explicit content, face, logo, and landmark detection.

Trueface Visionbox - Trueface Visionbox is a platform that offers vision solutions to the world by converting the camera into actionable information, and users can easily learn about anything through it.

Amazon Rekognition - Add Amazon's advanced image analysis to your applications.

Social Mapper - A Social Media Enumeration & Correlation Tool by Jacob Wilkin(Greenwolf) - Greenwolf/social_mapper

CloudSight - Image recognition API; send an HTTP request with an image, get a description of contents.

Kairos - Facial recognition & mood detection API