Zimbra - Zimbra is trusted by over 500 million users to increase productivity with a complete set of collaboration tools while maintaining total control over security and privacy.
Ubuntu - Ubuntu is a Debian Linux-based open source operating system for desktop computers.
iRedMail - A fully fledged, free email server solution, an open source project (GPL v2).
Windows 10 - Windows 10 unveils new innovations & is better than ever. Shop for Windows 10 laptops, PCs, tablets, apps & more. Learn about new upcoming features.
mailcow - An open source mailserver suite.
CentOS - CentOS is a community-supported, free and open source operating system based on Red Hat Enterprise...