Best Open Source Email Clients 2025

Email Clients

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Browse free open source Email Clients and projects below. Use the toggles on the left to filter open source Email Clients by OS, license, language, programming language, and project status.

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1

BlogMail

BlogMail software is a CMS and a Webmail application integrated in one. It's based on WordPress MultiUser and has all the functionality of this, like RSS and comments, plus support for LDAP, smarty templates, automatic subdomains and antispam filtering.

Downloads: 0 This Week

Last Update: 2013-04-16
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2

EGroupware Enterprise Collaboration

EGroupware has moved to Github, please find all our downloads there: https://github.com/EGroupware/egroupware/releases EGroupware is a multi-user, web-based groupware suite. Currently available modules include: email, addressbook, calendar, infolog (notes, to-do's, phone calls), content management, wiki, project management, tracker, timesheet, knowledge base, CalDAV/CardDAV

43 Reviews

Downloads: 0 This Week

Last Update: 2017-02-18
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3

bcom

Browser based office portal solution built in php. Including CRM, product managment, point-of-sale (POS), invoicing, online ordering, page building, web based mail, organiser and more!

Downloads: 0 This Week

Last Update: 2013-02-21
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4

gatOO Software

JSP/Servlets Container based on Tomcat, with some Object-Oriented Applications implemented all in Java Language.

Downloads: 0 This Week

Last Update: 2016-05-31
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