Compare software

FreePBXAsterisk
Freemium

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

 Free

Free and open source.

Web, Self-hosted Linux, Self-hosted
  • Free to download and run on your own server
  • Web interface for managing the phone system
  • Run your own PBX and VoIP system
  • Flexible enough to build custom telephony setups
  • Requires running and maintaining your own server
  • Some advanced features are in paid commercial modules
  • Configuration requires telephony knowledge
  • A framework to build on rather than a ready-to-use phone system
Self-hosted Downloadable app, Self-hosted
Open source Open source
License not stated License not stated
Not stated if an account is needed No account needed
Not stated if it works offline Not stated if it works offline

Checked September 23, 2026

Checked September 24, 2026

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