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Chaskiq
Full featured live chat, help center and CRM as an alternative to Intercom & Drift, Crisp and others.
AGPL-3.0
Commons-Clause
+1
Chatwoot
Customer communication platform (alternative to Intercom & Zendesk).
⊘ Proprietary
Ruby
+2Courier MTA
Fast, scalable, enterprise mail/groupware server providing ESMTP, IMAP, POP3, webmail, mailing list, basic web-based calendaring and scheduling services.
GPL-3.0
C
+1
DebOps
Your Debian-based data center in a box. A set of general-purpose Ansible roles that can be used to manage Debian or Ubuntu hosts.
GPL-3.0
Ansible
+1EmailRelay
A small and easy to configure SMTP and POP3 server for Windows and Linux.
GPL-3.0
C++
Exim
Message transfer agent (MTA) developed at the University of Cambridge.
GPL-3.0
C
+1