Stack Overflow - Community-based Q&A part of the Stack Exchange platform.

Simplify360 - An Omnichannel platform that can help you manage and automate customer support across Social Media Channels, Email, Live Chat. Manage Ecom., App and Location reviews. Understand your audience with enhanced Social Listening.

The Answer Bank - The Answer Bank is the UK’s leading question-and-answer site.

Zendesk Answer Bot - Chatbots

Blurtit - Blurtit is a Q&A website. You can ask a question or answer on any question.

Gladly - Gladly develops a communication interface that allows agents and customers to converse across voice, email, SMS, and social media.