Microsoft Exchange Server Alternatives [Page 5]

A simplified Linux distribution built from containers, for containers. Everything in RancherOS is managed by Docker, with minimum software needed to run Docker.

Mail-in-a-Box provides webmail and an IMAP/SMTP server for use with mobile devices and desktop mail software and also includes contacts and calendar synchronization.

Open Source

Warm up your cold email inbox, and never land in spam anymore!

Try for free freemium $9.0 / Monthly

IceWarp integrates all communication & collaboration features in one unified solution.

paid Free Trial $2.8 / Monthly (Lite)

Sharing & communication software for business

Exim is a message transfer agent (MTA) developed at the University of Cambridge for use on Unix systems connected to the Internet.

Open Source

KerioConnect is a commercial mail and groupware server.

Our Container Linux documentation covers everything from setting up to running Container Linux clusters. Simplify your experience with CoreOS today.

Is a collaboration suite (messaging and groupware).

Thunderbird is a free email application that's easy to set up and customize - and it's loaded with great features!

Spike solves businesses' communication chaos by bringing together email, team chat, collaborative docs, and meetings, into one feed.

freemium

Install Linux OS to deploy enterprise applications faster. Utilize preconfigured and validated configurations to shorten the time to deployment for critical workloads. Oracle Linux is optimized for cloud environments.

Microsoft Office is an office suite of desktop applications, servers, and services for the Microsoft Windows and OS X operating systems.

Calendar is a time-management web application by Microsoft.