Smile Snap! - Automatically take a photo when everyone is smiling
FaceAware - Image processing with the ability to focus on faces 📸👶
PhotoKharma - Automatically get all the photos friends' take of you
Facesoft - The world's most accurate face recognition algorithm
Facial Recognition by FB - Get notified if someone tries to use your photo on Facebook
Face++ - API for face detection – also detects gender, age, pose