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FreeSWITCH vs 3CX Free Basic: catalog facts
FreeSWITCH	3CX Free Basic
Free Free source code; commercially supported builds and professional services are available.	Freemium Free for up to 10 users and 4 simultaneous calls; larger editions are paid.
Windows, macOS, Linux, Self-hosted	Self-hosted
Runs on hardware from a Raspberry Pi to multi-core servers Handles voice, video and chat	No licence cost for small teams Runs on your own infrastructure
Distributed mainly as source code to build Requires telephony and server administration knowledge	Limited to 10 users and 4 simultaneous calls Proprietary software
Self-hosted	Self-hosted
Open source	Closed source
License not stated	License not stated
No account needed	Not stated if an account is needed
Not stated if it works offline	Not stated if it works offline
Official website Full listing and sources Checked September 24, 2026	Official website Full listing and sources Checked September 23, 2026

Catalog facts only. Anything “not stated” is unconfirmed. Check full listings for details.