Slackin - Create your own public Slack chat community
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.
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.
Chats.Directory - A curated list of the best Slack groups for professionals
Avochato - Text messaging for your business.