Top 6 Open-Source Alternatives to grommunio

grommunio

grommunio (formerly known as grammm) efficiently combines all requirements of modern, digital communication and collaboration.

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Product categories

Email Email Clients Email Management Email Service Provider Enterprise Communication Open Source Self-hosted Email

Summary

The top open-source alternatives to grommunio are iRedMail, mailcow, 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
mailcow Landing Page
2

mailcow

An open source mailserver suite.
Pricing:
- Open Source
#Email #Open Source #Email Service Provider 87 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
Roundcube Landing Page
4

Roundcube

Web-based IMAP email client
Pricing:
- Open Source
#Email #Enterprise Communication #Email Clients 17 social mentions
Mail-in-a-box Landing Page
5

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
Mailpile Landing Page
6

Mailpile

Mailpile is a modern, fast web-mail client with user-friendly encryption and privacy features.
Pricing:
- Open Source
#Email #Enterprise Communication #Email Clients