Drupal is an open-source platform and content management system for building dynamic web sites offering a broad range of features and services including user administration, publishing workflow, discussion capabilities, news aggregation, metadata functionalities using controlled vocabularies and XML publishing for content sharing purposes. Equipped with a powerful blend of features and configurability, Drupal can support a diverse range of web projects ranging from personal weblogs to large community-driven sites.
BuddyPress is built to bring people together. It works well to enable people with similar interests to connect and communicate. Some of usage might be:
– A campus wide social network for your university, school or college.
– An internal communication tool for your company.
– A niche social network for your interest topic.
– A focused social network for your new product.
Anahita® is an open source and developer friendly social networking platform and framework that helps you build social web and mobile app services in less time by utilizing the reusable design patterns that exist in all social networks called the nodes-graphs-stories architecture. With basic technical skills, Anahita provides you a simple and versatile social network right away.
Microsoft SharePoint is the content and collaboration management server from Microsoft. SharePoint can be used to provide intranet portals, document & file management, collaboration, social networks, extranets, websites, enterprise search, and business intelligence.
It also has system integration, process integration, and workflow automation capabilities. SharePoint is widely used by Fortune 500 companies.