Providing enterprises with a viable Exchange alternative based on open standards.

We address the needs of enterprises for a robust, feature-rich messaging solution that offers freedom and choice. Our guiding philosophy is to be open. Our product architecture is open, and our product integrates with existing messaging clients, infrastructure, and applications. We provide full-feature support of Outlook, are directory agnostic, and co-exist with Exchange. This allows you to enjoy the benefits of moving messaging to Linux, while preserving the substantial investment you’ve already made in your messaging ecosystem. We’ve released source code for our Collaboration Platform, which is the core code base for all of our product editions. Our software can be ported to any platform, and can be extended, localized and customized.

Our Enterprise Edition serves the needs of enterprises of all sizes, including Fortune 1000.

Our Small Business Edition provides a single-server solution for small and mid-size businesses.

We also offer a free Community Edition for cost-conscious organizations who need basic email and calendaring.

We have over two million mailboxes deployed worldwide, and over 1,300 corporate customers deployed in over 65 countries. We have more than 200,000 Community Edition downloads and more than 6,000 active members in our community forum. Our product is the most robust Linux-based email and calendaring platform available to enterprises today.