EGroupware is the Smart Online Office for the web browser from EGroupware GmbH in Kaiserslautern/Germany: open source, GDPR-compliant, adaptable and expandable - with professional support on request.
EGroupware is a complete groupware solution, modular and expandable. In addition to its own developments, the Smart Online Office also integrates partner products and proven open source applications from other manufacturers. EGroupware contains everything that SMEs (small and medium-sized enterprises), city administrations or even educational and research institutions need for their daily work:
• Email, Calendar, Contacts, Files (SMB, WebDAV, NFS, etc.) including sharing & Collabora Online Office
• Project management, Time recording, Task planner, Kanban board
• CTI Telephony integration, Customer management (CRM) and Helpdesk
• Videocall & Chat Integration (Jitsi, BigBlueButton, Rocket.Chat)
• Video-based learning application: smallPART  - easy to use via LTI with other learning management systems
• Open interfaces, Import/export, Synchronisation of data (ActiveSync, Card/Cal/WebDAV) and REST API •
• Responsive design with full support for mobile devices from 5" upwards

Germany: Nordenham, Jena, Ochtrup, Pirmasens, many Universitys and schools, Community Edition is used world wide