Vanilla Forums - Build an engaging community forum using Vanilla's modern cloud forum software.
Yammer - Yammer is a leading enterprise social network used by more than 200,000 companies worldwide, including 85% of the Fortune 500, to get work done smarter and faster. Sign Up Today.
Forumbee - Forumbee offers community forums for discussions, feedback and Q&A.
MS SharePoint - Share, organize, and discover information with Microsoft SharePoint. Learn about SharePoint Online, OneDrive for Business, and Apps for SharePoint
Discourse - Discourse is an open source discussion platform built for the next decade of the Internet.
Communifire - Enterprise Social Collaboration Software