Profile Photo Gradient Border - Add a gradient ring to your profile picture
Face++ - API for face detection – also detects gender, age, pose
Photo Glitter Light effect - Photo Glitter Light effect is free to use photography app developed in the market by Addquick Inc.
Facesoft - The world's most accurate face recognition algorithm
Sparkle Photo Frames - Sparkle Photo Frames is a photo-editing application that is used to add the sparkle and glittering effect on pictures with multiple shining frames.
Facial Recognition by FB - Get notified if someone tries to use your photo on Facebook