Slack with your Users - Speak to your app's users entirely within Slack

Zendesk - Zendesk is a beautiful, lightweight help-desk solution.

Conversity - Easiest way to manage Facebook Messenger chats

Froged - One click solution providing easy-to-use marketing, sales and support services to turn website visitors into happy customers.

Avochato - Text messaging for your business.

Intercom - Intercom is a customer relationship management and messaging tool for web businesses. Build relationships with users to create loyal customers.