Intercom - Intercom is a customer relationship management and messaging tool for web businesses. Build relationships with users to create loyal customers.
Live Chat by Landbot - Live chat that combines chatbots with human chat
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.
GoSquared Live Chat - Beautiful, simple, and free live chat for your website