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
Drift - A messaging app that helps you grow your business.
Actions from Slack - Turn Slack messages into tickets, issues, tasks, and more.
ChatSupport.co - ChatSupport is a live chat software for websites which lets you interact with website visitors and customers through customizable chat widgets.
Papercups - Open source live customer chat