Open source
Not listed
Free software with best-effort community support
Checked 23 Sep 2026
Free software with best-effort community support
Checked 23 Sep 2026
Most questions answered within one business day · guidance · discounted custom development
Checked 11 Oct 2026
Includes Basic · private branch maintenance · minor custom development or integration tweaks
Checked 11 Oct 2026
Includes Advanced · reserved engineering time · weekly meetings or office hours
Checked 11 Oct 2026
All versions are full-featured · no restrictions stated · support and services are separate
Checked 11 Oct 2026
Best-effort answers by mail or community platforms · fixes and updates follow major releases
Checked 11 Oct 2026
Bespoke SLAs · communication channels · dedicated engineering pods
Checked 11 Oct 2026