SOGo (Scalable OpenGroupware.org) is an open source collaborative software (groupware) server with a focus on simplicity and scalability. Developed by inverse
License: Open Source
Horde is known for its broad range of features and user-friendly interface, making it suitable for individual users and small teams. On the other hand, SOGo excels in groupware capabilities and synchronization, making it ideal for organizations that require robust collaboration tools.