Intercom - Intercom is a customer relationship management and messaging tool for web businesses. Build relationships with users to create loyal customers.
Outbound Apps by Intercom - Embed apps right inside your messages
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.
Live Chat by Sumo.com - Instantly communicate with customers, prospects & visitors
Avochato - Text messaging for your business.
Actions from Slack - Turn Slack messages into tickets, issues, tasks, and more.