Compare software

Quo vs 3CX Free Basic: catalog facts
Quo	3CX Free Basic
Paid Paid subscription with a free trial.	Freemium Free for up to 10 users and 4 simultaneous calls; larger editions are paid.
Windows, macOS, Android, iOS, Web	Self-hosted
Shared numbers and inbox for a whole team Apps on mobile, desktop and web	No licence cost for small teams Runs on your own infrastructure
Requires a paid subscription after the trial Aimed at businesses rather than personal use	Limited to 10 users and 4 simultaneous calls Proprietary software
Downloadable app, Web application, Hosted service	Self-hosted
Closed source	Closed source
License not stated	License not stated
Account needed	Not stated if an account is needed
Needs internet	Not stated if it works offline
Official website Full listing and sources Checked October 2, 2026	Official website Full listing and sources Checked September 23, 2026

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