Top 12 Open-Source Alternatives to OpenChange

OpenChange

OpenChange aims to provide a portable Open Source implementation of Microsoft Exchange Server and...

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Product categories

Email Email Clients Email Delivery Email Management Email Service Email Service Provider Enterprise Communication MTA Network & Admin Open Source SMTP Servers Self-hosted Email

Summary

The top open-source alternatives to OpenChange are iRedMail, Roundcube, and SOGo. One of the criteria for ordering this list is the number of mentions that products have on reliable external sources. You can suggest additional sources through the form here.

iRedMail Landing Page
1

iRedMail

A fully fledged, free email server solution, an open source project (GPL v2).
Pricing:
- Open Source
#Email #Email Service Provider #Email Clients 3 social mentions
Roundcube Landing Page
2

Roundcube

Web-based IMAP email client
Pricing:
- Open Source
#Email #Enterprise Communication #Email Clients 17 social mentions
SOGo Landing Page
3

SOGo

SOGo is groupware server with a focus on scalability and open standards.
Pricing:
- Open Source
#Email #Email Service Provider #Email Clients 1 social mentions
mailcow Landing Page
4

mailcow

An open source mailserver suite.
Pricing:
- Open Source
#Email #Open Source #Email Service Provider 87 social mentions
Dovecot Landing Page
5

Dovecot

Dovecot is an open source IMAP and POP3 email server for Linux/UNIX-like systems, written with...
Pricing:
- Open Source
#Email #SMTP Servers #MTA
DBMail Landing Page
6

DBMail

DBMail is a fast, scalable IMAP4 and POP3 server that stores all email and users in a Postgresql...
Pricing:
- Open Source
#Email #SMTP Servers #MTA 4 social mentions
Rainloop Landing Page
7

Rainloop

RainLoop is a web based email client.
Pricing:
- Open Source
#Email #Enterprise Communication #Email Clients 1 social mentions
Cyrus IMAP Landing Page
8

Cyrus IMAP

The Cyrus IMAP server differs from other IMAP server implementations in that it is generally...
Pricing:
- Open Source
#Email #SMTP Servers #MTA
Radicale Landing Page
9

Radicale

The Radicale Project is a complete CalDAV (calendar) and CardDAV (contact) server solution.
Pricing:
- Open Source
#Email #Email Clients #Network & Admin 16 social mentions
Mail-in-a-box Landing Page
10

Mail-in-a-box

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.
Pricing:
- Open Source
#Email #Email Service Provider #Email Clients 125 social mentions
WildDuck Landing Page
11

WildDuck

Self hosted modern mail server
Pricing:
- Open Source
#Email #Email Service Provider #Self-hosted Email 8 social mentions
kumomta.com
12

KumoMTA

KumoMTA is the world's first Open-Source MTA designed from the ground-up for large-volume senders. Get a fast, flexible, supported solution.
Pricing:
- Open Source
- Free
- Free Trial
#Email #Email Delivery #SMTP Servers 1 social mentions