Live Chat by Sumo.com - Instantly communicate with customers, prospects & visitors
Intercom - Intercom is a customer relationship management and messaging tool for web businesses. Build relationships with users to create loyal customers.
Video Live Chat for Websites - Provide real-time video chat support with screen sharing
GoSquared Live Chat - Beautiful, simple, and free live chat for your website
Drift - A messaging app that helps you grow your business.
Free HelpCrunch Live Chat - Free live chat & in-app messenger for startups