Discovered eXo Platform which is a open source enterprise social platform https://www.exoplatform.com/ https://www.exoplatform.com/#/#features 2 minute YouTube video: https://youtu.be/HCfb0pNigwE So it can be used to (quoting from the website) : "Build a Social Intranet (https://www.exoplatform.com/lp/social-intranet) eXo Platform is an out-of-the-box social intranet solution. Rich collaboration tools such as wikis, forums, calendars and documents (https://www.exoplatform.com/lp/collaboration-software) are smartly integrated around activity streams, social networking (https://www.exoplatform.com/lp/social-network) and workspaces. Online Community (https://www.exoplatform.com/lp/community-management) eXo Platform is ideal for building an online community of customers, partners or fans. You can provide them with discussion forums, collaborative FAQs and polls. Build topic-oriented sub-communities or workgroups using spaces. Engage with your members via social networking. Send them email notifications to keep them coming back. Promote your products or services through the built-in web content management capabilities." Dev Anand