Intercom - Intercom is a customer relationship management and messaging tool for web businesses. Build relationships with users to create loyal customers.
HelpScout - Help Scout is a simple, straightforward way to provide excellent support
Roby - Refreshingly simple helpdesk for Slack & Teams users
GoSquared Live Chat - Beautiful, simple, and free live chat for your website
Sidequest for Slack - Create and track personal or support team tasks, 100% inside Slack.
Drift - A messaging app that helps you grow your business.