Amazon Rekognition - Add Amazon's advanced image analysis to your applications.
PhotoTime - Automatic face sorting & keywords tagging for your photos
Clarifai - The World's AI
Piwigo.org - Manage your photo collection with Piwigo. Piwigo is open source photo gallery software for the web. Designed for organisations, teams and individuals.
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.
Facial Recognition by FB - Get notified if someone tries to use your photo on Facebook