Open Source Software Catalog

495 programs — free forever, legal to download.

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Showing 495 programs

Inboxen GPL-3.0 Email Servers Modoboa ISC Email Servers Postal MIT Email Servers Cyrus IMAP BSD-3-Clause Mail Delivery Agents Dovecot MIT Mail Delivery Agents Courier MTA GPL-3.0 Mail Transfer Agents OpenSMTPD ISC Mail Transfer Agents Postfix Unknown Mail Transfer Agents HyperKitty GPL-3.0 Email Lists Keila AGPL-3.0 Email Lists Mailman GPL-3.0 Email Lists mlmmj MIT Email Lists Postorius GPL-3.0 Email Lists Schleuder GPL-3.0 Email Lists ngircd GPL-2.0 IRC Freepbx GPL-2.0 SIP FusionPBX MPL-1.1 SIP Kamailio GPL-2.0 SIP SIP3 SIPCAPTURE Homer AGPL-3.0 SIP Wazo GPL-3.0 SIP Yeti-Switch GPL-2.0 SIP Akkoma AGPL-3.0 Forums Answer Apache-2.0 Forums