10760 apps in this category
SIP proxy/server for voice, video, IM, presence and any other SIP extensions. (Source Code) GPL-2...
Modular SIP server (registrar/proxy/router/etc). (Source Code) GPL-2.0 C/deb
Web interface for multi-platform voice switch called FreeSWITCH. (Source Code) MPL-1.1 PHP
Always online web IRC client. (Demo, Source Code) Artistic-2.0 Perl/Docker
Open-source webmail package
Open-source webmail client
Feed reader for your email accounts. (Source Code) LGPL-2.1 PHP
Fast, light and extensible chat client. (Source Code) GPL-3.0 C/Docker/deb
Scalable open source cross-platform telephony platform. (Source Code) MPL-2.0 C
Mailing list manager. (Source Code) GPL-2.0 Perl
Web user interface to access GNU Mailman. (Source Code) GPL-3.0 Python
Easy to use but advanced IP PBX system, VoIP gateway and conference server. (Source Code) GPL-2.0...
