Characterz - Biggest diverse mix and match 3D illustration library
Labelbox - Build computer vision products for the real world
H A N D Z - Free 3D illustrations of diverse hands gestures
CloudFactory - Human-powered Data Processing for AI and Automation
Khagwal 3D Illustration Library - Free 3D illustration library for web & mobile app designers
CrowdFlower - Enterprise crowdsourcing for micro-tasks