Top 10 Open-Source Alternatives to Kerio Connect

Product categories

Email Email Clients Email Delivery Email Service Email Service Provider Enterprise Communication Hosted Email MTA No Code Open Source SMTP Server Self-hosted Email

Summary

The top open-source alternatives to Kerio Connect are Group Office, mailcow, and Mail-in-a-box. 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.

Group Office Landing Page
1

Group Office

Group-Office is an enterprise CRM and groupware tool.
Pricing:
- Open Source
#Project Management #No Code #Enterprise Communication
mailcow Landing Page
2

mailcow

An open source mailserver suite.
Pricing:
- Open Source
#Email #Self-hosted Email #Email Service Provider 82 social mentions
Mail-in-a-box Landing Page
3

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 #Self-hosted Email #Email Service Provider 115 social mentions
iRedMail Landing Page
4

iRedMail

A fully fledged, free email server solution, an open source project (GPL v2).
Pricing:
- Open Source
#Email #SMTP Server #Self-hosted Email 2 social mentions
WildDuck Landing Page
5

WildDuck

Self hosted modern mail server
Pricing:
- Open Source
#Email #Self-hosted Email #Email Service 8 social mentions
Roundcube Landing Page
6

Roundcube

Web-based IMAP email client
Pricing:
- Open Source
#Email #Email Clients #SMTP Server 16 social mentions
Tutanota Landing Page
7

Tutanota

Get your encrypted mailbox for free.
Pricing:
- Open Source
#Email #Email Clients #Enterprise Communication 177 social mentions
Exim Landing Page
8

Exim

Exim is a message transfer agent (MTA) developed at the University of Cambridge for use on Unix systems connected to the Internet.
Pricing:
- Open Source
#SMTP Server #Email #MTA
Dovecot Landing Page
9

Dovecot

Dovecot is an open source IMAP and POP3 email server for Linux/UNIX-like systems, written with...
Pricing:
- Open Source
#Email #SMTP Server #Self-hosted Email
SOGo Landing Page
10

SOGo

SOGo is groupware server with a focus on scalability and open standards.
Pricing:
- Open Source
#Email #Email Clients #Self-hosted Email 1 social mentions