Slackin - Create your own public Slack chat community
Talkus - Chat with your website users from Slack
Hamster Pad - A social network built on top of Slack
Slacking Pigeons - Chat in real time with your users directly from Slack
Mio - Powering seamless communication between workplace chat apps.
Intercom - Intercom is a customer relationship management and messaging tool for web businesses. Build relationships with users to create loyal customers.