FreeSWITCH — SIP/VoIP (Open Source)

FreeSWITCH is an open-source SIP/VoIP solution. Compare it against 6 other SIP/VoIP tools on FreeSoftwareX — by features, licensing and price — and request a quote or demo free in 2026.

What is FreeSWITCH?

FreeSWITCH is open source — its source code is publicly available and free to use, modify and self-host, usually with an active community and no licensing fees. It is categorised under SIP/VoIP. Buyers typically evaluate FreeSWITCH when they need a dependable SIP/VoIP option and want to weigh the trade-offs between free, open-source and paid tools before committing.

FreeSWITCH alternatives

If FreeSWITCH isn't the right fit, compare these SIP/VoIP alternatives side by side:

AsteriskFreePBXFusionPBXKamailioWazoopenSIPS

Frequently asked questions

Is FreeSWITCH free?
Yes. FreeSWITCH is open source and free to use, with no purchase cost for the core product.
What are the best FreeSWITCH alternatives?
Popular SIP/VoIP alternatives to FreeSWITCH include Asterisk, FreePBX, FusionPBX, Kamailio. See the full list of SIP/VoIP on FreeSoftwareX.
What type of software is FreeSWITCH?
FreeSWITCH is an open-source SIP/VoIP tool.

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