Bazaart - Create. Discover. Love. Social photo collage editor
Face++ - API for face detection – also detects gender, age, pose
PhotoRoom - Create studio-quality product pictures in seconds.
TrueFace.AI - A facial recognition API with picture attack detection
IMG.LY - Power Your Apps with IMG.LY | The Leading Provider of Design, Photo, and Video Editing SDKs
Knoto - Send photos to friends automatically using face recognition