FreeSWITCH
Scalable open source cross-platform telephony platform.
Maintained, but at a slower pace than the leaders in its category.
Commit activity more than 33% of tracked projects; popularity more than 67%. How this is calculated.
Commits, last 11 months
| Stars | 5.2k |
|---|---|
| Latest release | v1.11.3 · 28 Aug 2026 |
| Repo updated | 27 Sept 2026 |
| Licence | MPL-2.0 |
| Built with | C |
Is FreeSWITCH actively maintained?
Development is ongoing. The repository recorded 113 commits over the same window, and the last three months alone account for 73 of them.
Activity is accelerating: the last quarter carried 115% more commits than the one before it.
The most recent tagged release, v1.11.3, shipped within the last month — a current, installable version exists today.
FreeSWITCH ranks #5 of 13 in Communication - SIP, placing it mid-table for maintenance activity.
What FreeSWITCH actually does
FreeSWITCH is an open-source communications platform designed to handle cross-platform telephony routing and signaling. Written in C under the MPL-2.0 licence, it provides the core infrastructure required to build voice, video and messaging applications. You can use it to manage SIP sessions, route audio streams, and build custom interactive voice response systems.
Best fit: It suits developers and systems administrators building carrier-grade voice applications or custom private branch exchange setups from scratch.
Worth knowing: Telephony software of this nature carries a steep configuration curve and debugging SIP routing issues can become exceptionally complex in production.
Deployment notes
As a compiled C application, it typically runs as a dedicated system service with local configuration files, though you may need external database integration for complex multi-tenant call routing.
Links
FreeSWITCH as a replacement for
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