OpenChange
OpenChange aims to provide a portable Open Source implementation of Microsoft Exchange Server and... subtitle
OpenChange Alternatives
The best OpenChange alternatives based on verified products, community votes, reviews and other factors.
Latest update:
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/zimbra-alternatives
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.
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/roundcube-alternatives
Web-based IMAP email client
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Try for free
Warm up your cold email inbox, and never land in spam anymore!
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/iredmail-alternatives
A fully fledged, free email server solution, an open source project (GPL v2).
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/horde-alternatives
Horde Groupware is a free, enterprise ready, browser based collaboration suite.
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/microsoft-exchange-server-alternatives
Microsoft Exchange Server is a messaging and collaborative software product developed by Microsoft.
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/crossbox-alternatives
Designed for those who settle only for the best — CrossBox is beautiful, dazzlingly fast, and comes with advanced features that provide you and your team with cutting-edge communication technologies.
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/google-workspace-alternatives
Google's encompassing suite of cloud-based business apps.
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/nextcloud-hub-alternatives
On-premises, enterprise collaboration solution for documents, emails, calendars and more.
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/hmail-server-alternatives
hMailServer is a free e-mail server for Microsoft Windows.
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/kopano-alternatives
Sharing & communication software for business
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/microsoft-365-alternatives
Boost your productivity with reliable access anywhere with services like email, calendar, file sharing, meetings, instant messaging, and Office Online
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/sogo-alternatives
SOGo is groupware server with a focus on scalability and open standards.
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/rainloop-alternatives
RainLoop is a web based email client.
Generic OpenChange discussion
MailReach.co