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