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.
Live Chat by Landbot - Live chat that combines chatbots with human chat
Crisp Chat - Multi-channel customer support software
Tolstoy - Communicate with interactive videos
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.