Open source
Digital workplace, now easier than ever
Unlock the full potential of the open-source e-mail and collaboration platform.
Complete set of modern features
A full-featured modern digital workplace, including email management, calendaring, chats and video chats, file management, and collaborative editing.
Free and open source
Free of any cost and open to all. Under AGPL v3, users can freely use, share, modify, and distribute software while respecting the original license of third-party packages.
Mobile applications
Enjoy the convenience of having your emails, calendars, files and other important data always accessible. Stay connected to your business no matter where you are.
Easy administration
A user-friendly interface for system administrators to manage their domains, accounts, mail stores, and class of service (COS) through a single unified admin panel.
Get Carbonio CE
Free, open source, supported by a global community
Subscribe to receive the download link, getting-started instructions, and updates from the Carbonio CE community.
A complete platform
All the features you need
Advanced e-mail
Improve the efficiency of your email management with attachment preview, shared folders, and multiple profiles. Protect your emails from spam using integrated anti-spam and antivirus.
Shared calendars
Stay organized and keep track of your team's schedule with a comprehensive calendaring system and the ability to create shared calendars per department or team.
Video chats
Fully-featured chat and video chats integrated into the same platform as your email — with screen sharing, file sharing, and group messaging for easy team communication.
Dedicated mobile applications
Have your emails, calendars, files and other important data always accessible. Stay connected to your business no matter where you are.
File management
Keep track of all your files, folders, and their versions with a comprehensive file management solution — full sharing capabilities, access control, and file versioning.
Collaborative editing
Streamline your workflow and collaborate efficiently by working on the same file simultaneously.
Our commitment
Built with the open-source community
Open source means much more than releasing source code — it means unlocking the power of a global community, providing users with constant updates and improvements as the platform scales.
“Being open source means much more than just releasing the source code, it means unlocking the power and ideas of a global community, providing users with constant updates and improvements as the platform scales.”
— Paolo Storti, CEO
We have always believed that an open-source approach is by far the best technical and organizational solution, as the community is the real driving force for innovation in every aspect of a product’s lifecycle. Zextras Carbonio Community Edition is the result of more than 20 years of hands-on experience in open source and collaboration platforms.
It is an ambitious and challenging project, which cherry-picks and improves the best open-source components but also introduces innovative features, flexible integration, and of course the experience of 100 million trusted users of Zextras technology.
Ready to start with Carbonio CE?
Free, open source, supported by a global community.