FusionPBX is a free, open-source web interface for the FreeSWITCH communication platform. It can operate as a PBX, call center, fax, voicemail, conference, or voice application server. Deployments may be single-tenant or domain-based multi-tenant, and the maker describes unlimited extensions. Calling features include custom routing, recording, transfers, parking, queues, ring groups, IVR menus, follow-me calling, voicemail transcription, and an auto attendant. Administrators can provision phone devices and enable WebRTC calls in a browser. FusionPBX runs on various operating systems and hardware, with documentation optimized for Debian and Ubuntu. Installation guidance recommends Debian 12 or 13 and provides an Ubuntu 24.04 LTS path, while its CentOS 7 install is described as out of date. Gateways can connect it to other VoIP servers, voice providers, or SIP-registration systems. A JSON REST API is listed at Purple and Gold membership levels. Paid memberships range from 100.00 USD to 1000.00 USD per month and require a one-year commitment.
Who it is for
FusionPBX suits small, medium, and large businesses needing self-hosted phone-system functions. It is also relevant to administrators working with Debian, Ubuntu, FreeSWITCH, SIP gateways, or browser calling.
What is good
- Free open-source communication platform
- Supports multi-tenant deployments
- Unlimited extensions are described
- Includes WebRTC browser calling
- Provides extensive PBX and call-center features
What to know first
- CentOS 7 installation is out of date
- Paid memberships require a one-year commitment
- Green membership includes no support hours
- JSON REST API requires Purple or Gold membership
Verdict
FusionPBX provides a broad, self-hosted communications platform with PBX, call-center, voicemail, and browser-calling functions. Memberships add applications and support, but paid plans carry annual commitments.
FusionPBX plans and pricing
All plansCompared on business phone systems
- Free plan
- Yes
- Auto attendant
- Yes
- Call routing
- custom
- Voicemail transcription
- Yes


