FreeSWITCH

Open-source telephony platform for real-time voice and video

About FreeSWITCH

FreeSWITCH is an open-source telephony platform that turns a server into a full communications system. It routes and bridges voice and video calls, transcodes media, translates between protocols, and offers programmable call control through multiple APIs and modules. Carriers, contact centers, and product teams use it as the media engine inside large calling platforms, while its maintainers at SignalWire also offer paid enterprise editions and a hosted cloud platform.

FreeSWITCH website preview

Live preview of freeswitch.org via the WordPress mShots service — it can take a few seconds to generate on a first visit.

FreeSWITCH: strengths & things to check

Strengths

Free tier available — you can start without paying (freemium model).
Covers telephony, voip, open source, sip, self hosted — see the focus areas listed in its key facts.
Has 6 close alternatives in the same category on this page, so switching or comparing is easy.

Things to check

The full feature set sits behind a paid plan — check which limits the free tier carries on the official site before committing.
Current plan prices are not listed here (they change too often to print reliably) — confirm the exact price on the official site.
It is one of 565 tools in the Communication & Collaboration category here — compare it against the alternatives below before you commit.

Derived from this listing's own data (pricing model, focus areas and category) — not a hands-on review score.

FreeSWITCH pricing

Pricing model	Freemium — a free tier lets you start, and paid plans are available if you need more.
Free access	Yes — free tier, paid upgrades available
Current plan prices	Listed on the official site — prices change, so this directory links out instead of printing a number that may already be stale.
Official site	freeswitch.org

FreeSWITCH key facts

Category: Communication & Collaboration
Pricing: Freemium — a free tier lets you start, and paid plans are available if you need more.
Focus areas: telephony, voip, open source, sip, self hosted
Official site: freeswitch.org

FreeSWITCH FAQ

How much does FreeSWITCH cost?

Freemium — a free tier lets you start, and paid plans are available if you need more. Current plans and prices are listed on the official site (freeswitch.org).

What is FreeSWITCH used for?

Open-source telephony platform for real-time voice and video Its focus areas in the Communication & Collaboration category: telephony, voip, open source, sip, self hosted.

Where can I try FreeSWITCH?

On its official site, freeswitch.org — the Visit Official Site button above goes straight there.

FreeSWITCH vs alternatives

	FreeSWITCH	Asterisk	OpenSIPS	Kamailio
Pricing	Freemium — a free tier lets you start, and paid plans are available if you need more.	Free — listed in this directory as a free tool, with no paid plan required to use it.	Free — listed in this directory as a free tool, with no paid plan required to use it.	Free — listed in this directory as a free tool, with no paid plan required to use it.
Focus areas	telephony, voip, open source, sip, self hosted	voip, pbx, sip, telephony, open source	sip, voip, telephony, open source, server	sip, voip, telephony, server
Official site	freeswitch.org	asterisk.org	opensips.org	kamailio.org
Directory status	Listed	Listed	Listed	Listed

Side-by-side from each listing's own directory data. Full alternative cards are below.

About the Communication & Collaboration category

Chat, video meetings, and messaging apps that keep teams connected. The Communication & Collaboration category on Tools Hub currently lists 565 tools. Alongside FreeSWITCH, it includes Yarn.social, Mox, OpenSIPS, Jitsi Videobridge.

FreemiumCommunication & Collaborationtelephonyvoipopen-sourcesipself-hosted

Alternatives to FreeSWITCH

Tools in the same Communication & Collaboration category that share focus areas with FreeSWITCH — worth comparing before you commit:

Communication & Collaboration

Asterisk

Open-source IP PBX, VoIP gateway and conference server framework

Freevoippbxsiptelephony

Communication & Collaboration

OpenSIPS

Open-source SIP proxy and server for voice and video

Freesipvoiptelephonyopen-source

Communication & Collaboration

Kamailio

The open-source SIP server for large real-time communication services

Freesipvoiptelephonyserver

Communication & Collaboration

SIPCAPTURE Homer

Open-source VoIP and RTC capture, analysis and monitoring platform.

Freevoipsipmonitoringopen-source

Communication & Collaboration

Akkoma

Magically expressive federated social media server software

Freefediverseactivitypubmicrobloggingself-hosted

Communication & Collaboration

Anveo

VoIP platform with visual call flow builder

Freemiumvoipivrsipcall-flow

More in Communication & Collaboration

Comparing tools in the Communication & Collaboration category? These related listings are worth a look: Yarn.social — The decentralised social web, woven from plain text; Mox — Modern, secure, all-in-one open-source mail server; OpenSIPS — Open-source SIP proxy and server for voice and video.