mailcow is a mail server suite based on Dovecot, Postfix, SOGo, Rspamd and other open source software, that provides a modern Web UI for administration.
Germany
EU
+3
Free Microsoft Exchange AlternativesTop Mail Servers and other similar apps like Microsoft Exchange
The best free alternative to Microsoft Exchange is mailcow: dockerized, which is also Open Source. If that doesn't suit you, our users have ranked more than 25 alternatives to Microsoft Exchange and 19 is free so hopefully you can find a suitable replacement. Other interesting free alternatives to Microsoft Exchange are Kolab, hMail Server, Infomaniak kSuite and grommunio.
Alternatives list
- 23 mailcow: dockerized alternatives
48 Kolab alternativesKolab provides a FOSS communication & collaboration solution that can be completely self-hosted. Take back control of your data and access it via the webinterface, or existing mobile & desktop clients.
22 hMail Server alternativeshMailServer is a free e-mail server for Microsoft Windows. Its used by Internet service providers, companies, governments, schools and enthusiasts in all parts of the world.
78 Infomaniak kSuite alternativesSuite for secure email, calendaring, file sharing, chat, and online meetings, offering real-time collaboration on docs, GDPR compliance, customizable branding, renewable energy use, advanced user management, and all data hosted in Switzerland.
Cost / License
- Free Personal
- Proprietary
Application type
Platforms
- Mac
- Windows
- Linux
- Online
- Android
- iPhone
+6
grommunio (formerly known as grammm) efficiently combines all requirements of modern, digital communication and collaboration.
Cost / License
- Freemium
- Open Source
Application type
Platforms
- Mac
- Windows
- Linux
- Online
- Android
- iPhone
- iPad
- Self-Hosted
Comments about grommunio as an Alternative to Microsoft Exchange
norbertlambingAs the first open source solution to offer a full-featured OutlookAnywhere (RPC over HTTP) and MAPI/HTTP implementation, grammm is the alternative to proprietary backends for native interoperability with Microsoft Outlook
Almost everyone thinks grommunio is a great Microsoft Exchange alternative.
- grommunio is Freemium and Open Source
- grommunio is Privacy focused
61 SOGo alternativesSOGo is groupware server with a focus on scalability and open standards.
SOGo provides a rich AJAX-based Web interface and supports multiple native clients through the use of standard protocols such as CalDAV, CardDAV and GroupDAV.Share your calendars, address books and mails in.
The OX App Suite by Open-Xchange is web-based platform offering a suite of apps like an email client, calendar, contacts magement, cloud storage with synchronization and productivity apps for word processing, spreadsheets and presentations.
Cost / License
- Free
- Open Source
Application type
Platforms
- Linux
- Online
- Self-Hosted
- Software as a Service (SaaS)
+6
66 iRedMail alternativesA fully fledged, free email server solution, an open source project (GPL v2).
Use official binary packages from Linux/BSD distributions, with both i386 and x86_64 support.
Easy, fast deployment in LESS THAN 1 MINUTE. View YouTube Video to check how easy it is.
Works on both no.
OpenChange aims to provide a portable Open Source implementation of Microsoft Exchange Server and Exchange protocols.
Is a collaboration suite (messaging and groupware). It is designed to run on open source operating systems such as Linux or BSD. In order to modernize the Citadel platform for the Internet, the Citadel/UX developers added functionality such as shared calendars, instant...
19 Poste.io alternativesFull featured solution for your Email server. Native implementation of last anti-SPAM metods, webmail and easy administration included.
+3
Web-based team collaboration suite combining email client, calendar, contact and task tools, CRM, project and file management, file sharing, trouble tickets, Rocket.Chat chat, and Collabora online editing. Offers open source, self-hosted, and SaaS options.
Cost / License
- Freemium
- Open Source (GPL-2.0)
Application type
Platforms
- Linux
- Online
- Self-Hosted
- Software as a Service (SaaS)
+6
Switzerland
Canada
Great Activesync Support POOR and I mean VERY Poor Calendar that has a mind of It's own, setting events or reminders is a NIGHTMARE