Reference.com - Reference.com is the #1 question answering service that delivers the best answers from the web and real people - all in one place.
Labelbox - Build computer vision products for the real world
Microsoft Translator - Microsoft Translator is your door to a wider world.
CloudFactory - Human-powered Data Processing for AI and Automation
Google Translate - Google's free service instantly translates words, phrases, and web pages between English and over 100 other languages.
CrowdFlower - Enterprise crowdsourcing for micro-tasks