HumHub is an open-source Enterprise Social Network.

Easy to install, intuitive and adaptable with countless free modules. Available as on-premise or SaaS solution. Boost communication and knowledge transfer in your organization. Keep hands on your data with your own Enterprise Social Network.

Features:
• Group Communication
• Unique permissions and notifications concept
• Custom themes
• Available in +20 languages
• Marketplace with +80 modules/extensions to upgrade features
• Private Messaging System
• Wiki
• Task Manager
• Calendar
• Single Sign On