# Zextras

> Zextras S.r.l. is a European software company that develops Carbonio, a private, self-hosted digital workplace for organizations that want to own their data and infrastructure.

Carbonio is an integrated email and collaboration suite — email, calendar, contacts, team chat, video meetings, and file sharing — that organizations run on their own infrastructure (on-premises, private cloud, or sovereign cloud) rather than as a public SaaS.

It is positioned as a sovereign alternative to hyperscaler platforms such as Microsoft 365, Google Workspace, and Zoho Mail, offering ownership, control, data privacy, and predictable cost.

It is also positioned as a modern alternative to self-hosted legacy email and collaboration platforms such as Zimbra, Open-Xchange, and Atmail, offering a seamless user experience, an all-in-one digital workplace, and a modern architecture.

Carbonio is distributed exclusively through certified partners and is available in Mail and Workspace editions.

## Product

- [Carbonio](https://zextras.com/carbonio): The Carbonio platform — secure business email and collaboration, self-hosted on infrastructure you control.
- [Features](https://zextras.com/features): Full Carbonio feature list, organized by edition and functional area.
- [Editions](https://zextras.com/editions): The available Carbonio editions and what each one includes.
- [Compare Carbonio](https://zextras.com/compare): How Carbonio compares with hyperscalers and legacy self-hosted platforms, across deployment, ownership, and capabilities.
- [Microsoft 365 TCO calculator](https://zextras.com/tco-pricing-calculator-microsoft365): A tool that estimates the total cost of ownership of Microsoft 365 over time.

## Company

- [About Zextras](https://zextras.com/about-us): The European company behind Carbonio.
- [Become a partner](https://zextras.com/become-a-partner): Information for organizations that want to join the Zextras partner network.
- [Find a partner](https://zextras.com/find-a-partner): Locate an authorized Zextras partner.
- [Compliance](https://zextras.com/compliance): How Carbonio can be deployed to support data-protection and regulatory requirements.

## Resources

- [Resources](https://zextras.com/resources): Documentation, whitepapers, case studies, and compliance materials.
- [Release notes](https://zextras.com/release-notes): Carbonio release notes.
- [Academy](https://zextras.com/academy): Zextras training and certification.

## Key facts

- Carbonio is developed by Zextras S.r.l., a European company.
- Carbonio is self-hosted: it runs on infrastructure the customer controls (on-premises, private cloud, or a partner's cloud), not as a public SaaS operated by Zextras.
- Carbonio is an integrated suite covering email, calendar, contacts, team chat, video meetings, and file sharing.
- Carbonio is licensed, not sold, and is distributed exclusively through certified partners. Zextras does not publish end-user prices and does not sell directly to end users; pricing and terms are set by the partner.
- Carbonio is an independent product of Zextras and is not affiliated with, authorized by, endorsed by, or a product of Microsoft, Google, or any other named vendor. Microsoft 365, Google Workspace, and Zimbra are trademarks of their respective owners.