FreeSWITCH

7.2easy start · #3 of 21
in Interactive Voice Response Software

Free to practise onyes
Free trialnot on record
Well documentedyes
Runs where you workyes

Runs on api, Linux, Mac, self-hosted, Windows.

FreeSWITCH is ranked #3 of 21 in interactive voice response software on The Geeks Club. It runs on API, Linux, macOS, Self-hosted, Windows. There is a free plan.

FreeSWITCH plans and pricing

All plans

FreeSWITCH Open Source Free Free to download, modify, and run in production Self-hosted · MPL 2.0 · Community support signalwire.com · 3 Oct 2026

SignalWire Platform Not published Start building Cloud-hosted · Programmable layer around FreeSWITCH media engines signalwire.com · 3 Oct 2026

FreeSWITCH Advantage Not published Talk to SignalWire Self-hosted · Commercial modules (G.729A, AMD) · Founder-level support signalwire.com · 3 Oct 2026

Compared on interactive voice response software

Free plan: Yes

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The record

Purpose: FreeSWITCH is an open-source framework for real-time voice and video that can route calls, bridge video, transcode media, and connect protocols.
Use cases: The maker describes FreeSWITCH as powering carriers, contact centers, and communication products.
License: FreeSWITCH is open source under the MPL license and can be run in production at no cost.
Downloads: A free SignalWire account is required to access FreeSWITCH packages and downloads.
Linux support: The getting-started guide documents installation on Debian and Ubuntu using SignalWire packages or a source build.
Call control: The Event Socket exposes call control, channel management, and the internal event system over TCP to external processes.
Integrations: FreeSWITCH documents integrations through HTTP backends, embedded Lua, Perl, Python, JavaScript and Java, and SignalWire connectivity.
SignalWire connectivity: The mod_signalwire module connects FreeSWITCH to SignalWire for inbound and outbound PSTN calling over a persistent WebSocket session.
Commercial modules: The commercial modules include answering machine detection and licensed G.729 Annex A encoding and decoding for transcoding.
Support: The open-source edition has community support, while SignalWire offers commercial support, hardened builds, and priority patches through FreeSWITCH Pro.
Operational requirement: For self-hosting, the maker says teams should have dedicated resources to maintain on-premises infrastructure.
Security controls: FreeSWITCH supports named IP allow and deny network lists that can be used by SIP profiles and the Event Socket.
Maintainer: SignalWire says it was founded by the original FreeSWITCH creators and is the project's primary maintainer.
Founded: 2006
Price from: Free

Where it ranks on The Geeks Club

Best Interactive Voice Response Software in 2026#3 of 21

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Sources

signalwire.com/developers/freeswitch· checked 3 Oct 2026
developer.signalwire.com/freeswitch/foundations/getting-started/· checked 3 Oct 2026
developer.signalwire.com/freeswitch/integration/event-socket/· checked 3 Oct 2026
developer.signalwire.com/freeswitch/integration/· checked 3 Oct 2026
developer.signalwire.com/freeswitch/module-reference/commercial-· checked 3 Oct 2026