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

DISQUS - Disqus is a global comment system that improves discussion on websites and connects conversations across the web.

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

Quuu - Quuu is a curated content suggestion platform that connects to your Buffer queue, allowing you to grow a relevant social media following across your entire social landscape.

Freshdesk - Freshdesk is a cloud-based customer support software that lets you support customers through traditional channels like phone and email, social channels like Facebook and Twitter, and your own branded community

Written - Written helps content marketers build their audience by licensing content and audience from bloggers.