Startups
Browse startups that are checked for life and kept current. Sort by community signal or see what was verified most recently.
Kiwi IRC
InspIRCd
InspIRCd is a modular, high performance IRCv3 server combining stability and a rich and extensive C++ API with many optional features.
Ergo
SquirrelMail
Roundcube
Free and open source webmail software for the masses, written in PHP
Cypht
Cypht is a lightweight, open-source webmail client that combines all your email accounts and RSS feeds into one unified, streamlined inbox.
Sympa
Schleuder
Schleuder is a gpg-enabled mailinglist with remailing-capabilities.
Postorius
phpList
The home of the phpList community, documentation and forums.
mlmmj
MLMMJ is a simple and slim mailing list manager
Mautic
Mautic provides free and open source marketing automation software available to everyone.
Mailman
GNU Mailman
Listmonk
Keila
A reliable and easy-to-use email newsletter tool.
HyperKitty
Sendmail
Learn how the sendmail Sentrion platform helps organizations that are using open source for large complex environments and need an enterpris
Postfix
OpenSMTPD
the main OpenSMTPD page
Exim
Exim is a message transfer agent (MTA) developed at the University of Cambridge for use on Unix systems connected to the Internet.
EmailRelay
Courier MTA
chasquid
Dovecot
Dovecot Pro is a full-service email platform that delivers dynamic scalability, high performance, efficient utilization of hardware, and out