PhotoTime - Automatic face sorting & keywords tagging for your photos
Labelbox - Build computer vision products for the real world
Piwigo.org - Manage your photo collection with Piwigo. Piwigo is open source photo gallery software for the web. Designed for organisations, teams and individuals.
CloudFactory - Human-powered Data Processing for AI and Automation
Facial Recognition by FB - Get notified if someone tries to use your photo on Facebook
CrowdFlower - Enterprise crowdsourcing for micro-tasks