Slackin - Create your own public Slack chat community
Talkus - Chat with your website users from Slack
Mio - Powering seamless communication between workplace chat apps.
Slacking Pigeons - Chat in real time with your users directly from Slack
Chats.Directory - A curated list of the best Slack groups for professionals
Intercom - Intercom is a customer relationship management and messaging tool for web businesses. Build relationships with users to create loyal customers.