Microsoft Exchange Server Alternatives

Microsoft Exchange Server is described as 'messaging and collaborative software product developed by Microsoft. It is part of the Microsoft Servers line of server products and is widely used by enterprises using Microsoft infrastructure solutions' and is a Mail Server in the social & communications category. There are more than 25 alternatives to Microsoft Exchange Server for a variety of platforms, including Linux, Web-based, Windows, Self-Hosted and Mac apps. The best Microsoft Exchange Server alternative is Google Workspace. It's not free, so if you're looking for a free alternative, you could try mailcow: dockerized or Kolab Community. Other great apps like Microsoft Exchange Server are Zimbra Collaboration Suite, Kopano, Kolab Now and Zentyal.

Microsoft Exchange Server alternatives are mainly Mail Servers but may also be WebMail Providers or Calendar Apps. Filter by these if you want a narrower list of alternatives or looking for a specific functionality of Microsoft Exchange Server.

Microsoft Exchange Server alternatives page was last updated

Microsoft Exchange Server

Paid • Proprietary
Mail Server

Microsoft Exchange Server is a messaging and collaborative software product developed by Microsoft. It is part of the...

More about Microsoft Exchange Server

OpenChange
Is this is a good alternative?
Yes
No
Free • Open Source
Mail Server
Linux
30 OpenChange alternatives
OpenChange aims to provide a portable Open Source implementation of Microsoft Exchange Server and Exchange protocols.
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OpenChange Features
Exchange
Discontinued
Last release is from 2015
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iRedMail
Is this is a good alternative?
Yes
No
Freemium • Open Source
Mail Server
Linux
BSD
Self-Hosted
69 iRedMail alternatives
A 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.
iRedMail has no features, suggest some!
grommunio
Is this is a good alternative?
Yes
No
Freemium • Open Source
Calendar App
Web Conferencing Tool
Mac
Windows
Linux
Online
Android
iPhone
iPad
Self-Hosted
12 grommunio alternatives
grommunio (formerly known as grammm) efficiently combines all requirements of modern, digital communication and collaboration.
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grommunio Features
1. Real time collaborationMultiple users can work together in grommunio simultaneously.
Contacts
Self hosted mail
RPC
Support for Docker
CardDAV Support
IMAP Support
CalDAV Support
SMTP Support
POP3 Support
Comments about grommunio as a Alternative to Microsoft Exchange Server
Almost everyone thinks grommunio is a great Microsoft Exchange Server alternative.
norbertlambing
As 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
Positive comment•
1
Poste.io
Is this is a good alternative?
Yes
No
Free Personal • Proprietary
Mail Server
Linux
17 Poste.io alternatives
Full featured solution for your Email server. Native implementation of last anti-SPAM metods, webmail and easy administration included.
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Poste.io Features
Support for Docker
Blue-Mind
Is this is a good alternative?
Yes
No
Paid • Open Source
Mail Server
WebMail Provider
Calendar App
Linux
10 Blue-Mind alternatives
Blue Mind is a complete solution of company messaging, calendars and collaborative work. It aims to enable you to work daily with comprehensive, useful, efficient and effective tools.
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Blue-Mind Features
ActiveSync
Calendar Sync
Reduce mobile data usage
REST API
Citadel
Is this is a good alternative?
Yes
No
Free • Open Source
WebMail Provider
Calendar App
Linux
Online
17 Citadel alternatives
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...
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Citadel Features
1. Real time collaborationMultiple users can work together in Citadel simultaneously.
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Axigen
Is this is a good alternative?
Yes
No
Paid • Proprietary
Mail Server
WebMail Provider
Mac
Windows
Linux
BSD
Self-Hosted
Microsoft Office Outlook
Software as a Service (SaaS)
29 Axigen alternatives
Axigen provides a multi-tenant, fully integrated, multi-platform, all-in-one email, calendaring and collaboration messaging solution. It grants extensive branding options and is localized in over 29 languages (including right-to-left writing mode).
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Axigen Features
1. Real time collaborationMultiple users can work together in Axigen simultaneously.
2. Shared FoldersAxigen supports shared folders that can be used to store, search, and access files with multiple people.
Customizable
Shared Calendar
Clustering
Customizable branding
CalDAV Support
Email Archiving
Clustering Support
Multiple languages
Delegated Administration
CardDAV Support
Comments about Axigen as a Alternative to Microsoft Exchange Server
pros, cons and recent comments
Menoetius
Axigen is so much easier to use, it has the on-premise solution, and has unbeatable prices!
Positive comment•
0
MDaemon Messaging Server
Is this is a good alternative?
Yes
No
Paid • Proprietary
Mail Server
Windows
23 MDaemon Messaging Server alternatives
Low cost, easy to use Email Server software for virtual, on-premise, or hosted deployments for companies that want control of their email. Integrated web-mail with doc sharing, Drop Box integration, client and server side encryption.
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MDaemon Messaging Server Features
Encrypted Email
Outlook integration
IMAP Support
Dropbox integration
Opinions about MDaemon Messaging Server as a Alternative to Microsoft Exchange Server
Almost everyone thinks MDaemon Messaging Server is a great Microsoft Exchange Server alternative.
Sendmail
Is this is a good alternative?
Yes
No
Free • Open Source
Mail Server
Mac
Linux
26 Sendmail alternatives
Sendmail is a general purpose internetwork email routing facility that supports many kinds of transfer and delivery methods, including the Simple Mail Transfer Protocol (SMTP) used for email transport over the Internet.
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Sendmail Features
SMTP Support
EGroupware
Is this is a good alternative?
Yes
No
Freemium • Open Source
Mail Server
Calendar App
Project Management Tool
Linux
Online
Self-Hosted
Software as a Service (SaaS)
24 EGroupware alternatives
Online Collaboration with Chat and Online Office. Is developed as open source software in Germany, offered as free community version and as commercial version. Operation as self-hosted or as SaaS from the computer centre.
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EGroupware Features
1. Real time collaborationMultiple users can work together in EGroupware simultaneously.
2. Kanban BoardEGroupware allows you to organize your workflow by moving cards with drag-and-drop functionality between multiple columns.
Document sharing
Remote Work
Web-Based
CalDAV Support
RDP
WebDAV Support
CardDAV Support
Calendar Sync
Customizable