Microsoft Exchange Server Alternatives for Linux

Microsoft Exchange Server is not available for Linux but there are plenty of alternatives that runs on Linux with similar functionality. The best Linux 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. If that doesn't suit you, our users have ranked more than 25 alternatives to Microsoft Exchange Server and many of them are available for Linux so hopefully you can find a suitable replacement. Other interesting Linux alternatives to Microsoft Exchange Server are Zimbra Collaboration Suite, Kopano, Zentyal and SOGo.

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.

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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...

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Microsoft Exchange Server alternatives page was last updated

Google Workspace
Is this is a good alternative?
Yes
No
Paid • Proprietary
Mail Server
Team Collaboration Tool
Calendar App
Mac
Windows
Linux
Online
Chrome OS
51 Google Workspace alternatives
Google Workspace (formerly Google Apps for Work / G Suite) is Google's encompassing selection of cloud apps for business, including customizable products under custom domain names. It features traditional office tools through Google Docs as well as communication and time...
- - Google Workspace is the most popular Web-based, Windows, Mac & Linux alternative to Microsoft Exchange Server.
- - Google Workspace is the most popular commercial alternative to Microsoft Exchange Server.
Suggest and vote on features
Google Workspace Features
1. Sync with Google CalendarGoogle Workspace can be synchronized with Google Calendar
2. Two-factor AuthenticationGoogle Workspace supports two-factor authentication (2FA).
Online collaboration
Google contacts integration
Sync with Google Drive
Google Sheets integration
Integrated Bulk Emailing
Opinions about Google Workspace as a Alternative to Microsoft Exchange Server
Some users think Google Workspace is a great Microsoft Exchange Server alternative, some don't.
mailcow: dockerized
Is this is a good alternative?
Yes
No
Free • Open Source
Mail Server
WebMail Provider
Linux
Self-Hosted
18 mailcow: dockerized alternatives
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.
- - mailcow: dockerized is the most popular Self-Hosted alternative to Microsoft Exchange Server.
- - mailcow: dockerized is the most popular Open Source & free alternative to Microsoft Exchange Server.
Suggest and vote on features
mailcow: dockerized Features
1. Dark Modemailcow: dockerized supports dark mode for comfortable usage in low light conditions.
2. Ad-freemailcow: dockerized doesn't contain any form of external advertising.
3. Two-factor Authenticationmailcow: dockerized supports two-factor authentication (2FA).
4. Mail Filteringmailcow: dockerized classifies email messages according to specified criteria, allowing you to automatically recognize fraudulent or spam messages.
5. Email Organizermailcow: dockerized allows you to take control of your inbox by filtering and control tools.
6. Spam Filtermailcow: dockerized can detect unsolicited, unwanted and virus-infected emails, calls, files, etc.
7. Support for Aliasesmailcow: dockerized supports aliases, so you can receive email without exposing your main email address
Self hosted mail
Support for Docker
ActiveSync
Modular System
Dockerized
Kolab Community
Is this is a good alternative?
Yes
No
Freemium • Open Source
Linux
Online
Self-Hosted
42 Kolab Community alternatives
Kolab is entirely Free and Open Source Software (a.k.a. FOSS), and uses Open Standards. We’ll get to why this is important to us, and hope that it is important to you thereafter.
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Kolab Community Features
1. Real time collaborationMultiple users can work together in Kolab Community simultaneously.
CalDAV Support
WebDAV Support
IMAP Support
CardDAV Support
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Opinions about Kolab Community as a Alternative to Microsoft Exchange Server
Most users think Kolab Community is a great Microsoft Exchange Server alternative.
Zimbra Collaboration Suite
Is this is a good alternative?
Yes
No
Freemium • Open Source
Mail Server
Calendar App
Team Collaboration Tool
Linux
Online
Self-Hosted
41 Zimbra Collaboration Suite alternatives
Zimbra Collaboration is an open, secure collaboration tool for email, calendaring, tasks and more. With the most innovative web application available today, Zimbra boosts the productivity of users on any desktop and dramatically reduces TCO compared to legacy platform vendors.
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Zimbra Collaboration Suite Features
1. Real time collaborationMultiple users can work together in Zimbra Collaboration Suite simultaneously.
ActiveSync
Active Directory integration
Opinions about Zimbra Collaboration Suite as a Alternative to Microsoft Exchange Server
Most users think Zimbra Collaboration Suite is a great Microsoft Exchange Server alternative.
Kopano
Is this is a good alternative?
Yes
No
Paid • Open Source
Mail Server
Email Client
Mobile Device Management (MDM) Tool
Mac
Windows
Linux
Online
Android
iPhone
Android Tablet
Windows Phone
iPad
Self-Hosted
Microsoft Office Outlook
S/MIME
Software as a Service (SaaS)
24 Kopano alternatives
Kopano puts an email, video meetings, calendaring, and file sharing solution within one single interface.
- - Kopano is the most popular Android, iPhone, iPad, Android Tablet & SaaS alternative to Microsoft Exchange Server.
Suggest and vote on features
Kopano Features
1. Real time collaborationMultiple users can work together in Kopano simultaneously.
On-premises software
Shared Calendar
CalDAV Support
IMAP Support
S/MIME Support
POP3 Support
Comments about Kopano as a Alternative to Microsoft Exchange Server
Almost everyone thinks Kopano is a great Microsoft Exchange Server alternative.
all • positive • negative relevance • date
Karunamon
Free and open source, and has most of the things you want from Exchange, including shared calendars.
Top positive comment •
0

bobsp
Scalable, open source with a great UX and it has all the features I need
Top positive comment •
0

marcski
Stable and cheap backend, flexible frontend support, open source, in full control of your data
Positive comment •
0

Guest
OpenSource, better to maintain, "not Microsoft"
Positive comment •
-1

Guest
I tried a lot of MS alternatives, OX, Zimbra, Zentyal, but what fits most with Outlook Sync was the new Kopano, it's more flexible. You can use the web app or desktop app too.
Positive comment •
-1

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5 of 6 comments
Zentyal
Is this is a good alternative?
Yes
No
Paid • Open Source
Mail Server
Linux Distro
Linux
27 Zentyal alternatives
Zentyal is a native Microsoft Active Directory implementation on Linux incorporating all the network services required in a small and medium business environment: Directory & Domain Server, Mail Server, Gateway and Infrastructure Server.
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Zentyal Features
Gateway
Member Directory
Web interface
Comments about Zentyal as a Alternative to Microsoft Exchange Server
Some users think Zentyal is a great Microsoft Exchange Server alternative, some don't.
Guest
Not an Exchange alternative at all. Does basic AD but that is about it. It is more of a gateway server.
Negative comment •
0

Guest
While the comments below suggest that this is AD, not exchange replacement. It was supposed to ship with SoGo / openchange as a managed add-on. You also strangely enough can't have exchange without AD. but guests do keep on posting. Exchange is just an Add-On to AD. (It extends the schema).
Positive comment •
-1

Guest
They do not share any common functionality. Zentyal is an Active Directory substitute, Microsoft Exchange is a groupware E-Mail (enterprise grade) server.
Negative comment •
-2

Guest
No Exchange alternative and no support for MS Outlook Client
Negative comment •
7
SOGo
Is this is a good alternative?
Yes
No
Freemium • Open Source
WebMail Provider
Linux
Online
Thunderbird
Cloudron
65 SOGo alternatives
SOGo 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.
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SOGo Features
Support for Multiple Users
Scheduling
CalDAV Support
CardDAV Support
OX App Suite
Is this is a good alternative?
Yes
No
Free • Open Source
Mail Server
WebMail Provider
Calendar App
Linux
Online
Self-Hosted
Software as a Service (SaaS)
19 OX App Suite alternatives
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.
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OX App Suite Features
1. Real time collaborationMultiple users can work together in OX App Suite simultaneously.
2. Cloud SyncSync your data (notes, documents, bookmarks, etc.) across your different devices and to the cloud.
3. Calendar IntegrationOX App Suite lets you sync your tasks and events with your calendar application.
Personal Information Manager (PIM)
Group Mail
German
WebDAV Support
WebDAV Sync
Opinions about OX App Suite as a Alternative to Microsoft Exchange Server
Most users think OX App Suite is a great Microsoft Exchange Server alternative.
Axigen
Is this is a good alternative?
Yes
No
Paid • Proprietary
Mail Server
WebMail Provider
Team Collaboration Tool
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
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.
Suggest and vote on features
OpenChange Features
Exchange
Discontinued
Last release is from 2015
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