FusionPBX
FusionPBX provides a web interface for FreeSWITCH, a multi-platform voice switch. It is for people who use FreeSWITCH and want to work with the voice switch through a web interface, including users who run FreeSWITCH on different platforms. FusionPBX serves as the web-facing layer, while FreeSWITCH remains the voice switch underneath. The main limitation follows from that division: FusionPBX is not a standalone voice switch. It relies on FreeSWITCH for the voice-switching role, so users looking for a separate switch will still need the underlying FreeSWITCH software. Its focus is narrower than a complete voice-switching system because it provides the interface rather than the switch itself. For FreeSWITCH users, FusionPBX offers one defined function: web-based access to a multi-platform voice switch.