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.
Crisp Chat - Multi-channel customer support software
Video Live Chat for Websites - Provide real-time video chat support with screen sharing
Chatlio - When you have a business to run, your average instant messaging software just will not do. You need an internal presence upon which your entire team can collaborate on. Read more about Chatlio.
Mutiny - Personalize your website for each visitor