Compare software

FreePBX3CX Free Basic
Freemium

Free and open source, with optional paid commercial modules and support.

 Freemium

Free for up to 10 users and 4 simultaneous calls; larger editions are paid.

Web, Self-hosted Self-hosted
  • Free to download and run on your own server
  • Web interface for managing the phone system
  • No licence cost for small teams
  • Runs on your own infrastructure
  • Requires running and maintaining your own server
  • Some advanced features are in paid commercial modules
  • Limited to 10 users and 4 simultaneous calls
  • Proprietary software
Self-hosted Self-hosted
Open source Closed source
License not stated License not stated
Not stated if an account is needed Not stated if an account is needed
Not stated if it works offline Not stated if it works offline

Checked September 23, 2026

Checked September 23, 2026

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