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Asterisk

Asterisk is an open-source framework for building communications applications that turns an ordinary computer into a communications server. Asterisk powers IP PBX systems, VoIP gateways, conference servers, and other custom solutions.

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CallHippo is an Intelligent cloud-based virtual phone system for small businesses & enterprises that comes with a power dialer, automatic call distribution, and more.

Dialpad

Dialpad is an AI-powered cloud communication platform that connects your teams through voice, video, messages, and online meetings.

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    7
    📖 Open Source
    🎁 Free Tool
    • Linux, macOS, Windows
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