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FreeSWITCH

Scalable software telephony platform

Chat & Communication ★ 5.2k stars Hard setup MPL-2.0

FreeSWITCH is a free communications software platform for building voice, video, and chat applications. It functions as a softswitch, PBX, and media gateway with extensive protocol support.

Official siteSource code

Key features

  • Softswitch and PBX
  • Voice, video, and chat
  • Scriptable call control
  • Wide codec and protocol support

Strengths

  • Released under the MPL-2.0 license
  • First-class Docker support for quick deployment
  • Mature project with 5.2k GitHub stars
  • Written in C

Is FreeSWITCH secure?

No known vulnerabilities affect FreeSWITCH's latest release (v1.11.3). OSV.dev lists 20 past advisories for the project; none of them applies to this release. No known vulnerabilities is not proof of security: it means none have been publicly catalogued.

  • Most recent fixed advisory CVE-2026-49841, published 2026-06-09 (127 days ago), fixed in 1.11.1

Source: OSV.dev, checked 2026-10-14. How this is measured.

FreeSWITCH replaces

Self-hosted Twilio alternativesSelf-hosted Asterisk alternatives

Health badge

Maintain FreeSWITCH? Add its health score to your README. The badge links back to this page.

SelfHostIndex: 92 · excellent

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[![SelfHostIndex health score for FreeSWITCH](https://selfhostindex.com/badge/freeswitch.svg)](https://selfhostindex.com/app/freeswitch/)
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<a href="https://selfhostindex.com/app/freeswitch/"><img src="https://selfhostindex.com/badge/freeswitch.svg" alt="SelfHostIndex health score for FreeSWITCH"></a>
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.. image:: https://selfhostindex.com/badge/freeswitch.svg
   :alt: SelfHostIndex health score for FreeSWITCH
   :target: https://selfhostindex.com/app/freeswitch/

The score is recomputed on every nightly rebuild from public repository data — see how it is calculated.

Compare FreeSWITCH

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