Rosto.io is face recognition API. It detects and predicts plenty of facial features such as landmarks, smile, glasses, age, gender, emotion. All of them using end-to-end machine learning.
Kairos - Facial recognition & mood detection API
Social Mapper - A Social Media Enumeration & Correlation Tool by Jacob Wilkin(Greenwolf) - Greenwolf/social_mapper
Google Vision AI - Cloud Vision API provides a comprehensive set of capabilities including object detection, ocr, explicit content, face, logo, and landmark detection.
Truein Staff Attendance - Truein Staff Attendance is a software that offers services to companies in touchless face recognition based on employee attendance.
OpenCV - OpenCV is the world's biggest computer vision library
Amazon Rekognition - Add Amazon's advanced image analysis to your applications.