3CX Phone System Alternatives

FreePBX is a web-based open source GUI that controls and manages Asterisk (PBX).

Open Source

An open source telephony switching and private branch exchange service for Linux.

Open Source

The most intuitive platform to manage projects and teamwork

Visit website paid Free Trial $14.0 / Monthly (per seat)

FreeSWITCH is an open-source media application designed to support popular protools such as SIP and WebRTC and provides a platform to develop voice and video applications.

FusionPBX is an open source FreeSWITCH GUI.

Open Source

Aircall is a call center software of a new generation designed for fast growing companies. Setup instantly and integrates to your CRMs

VitalPBX is a full-feature PBX (phone system) based on Linux and Asterisk.

As the foundation of great customer experience, the Genesys PureCloud contact center platform empowers your business to provide excellent service across the entire customer journey.

Your Open Source Solution For Unified Comunnications And More…

Kamailio® (successor of former OpenSER and SER) is an open source SIP server released under...

Utilities, Application Utilities, and Contact Management

The Genesys PureConnect platform is an all-in-one customer experience solution that’s easy to use, flexible and customizable to your business needs.

PBXware is the world’s first and most mature IP PBX Professional Open Standards Turnkey Telephony Platform. Bicom Systems’ softswitch is offered in the Business, Call Center and Multi-Tenant Editions each supporting specific features.

RingCentral is the leading provider of cloud-based communications and collaboration solutions for small business and enterprise companies

Open Source freemium $19.99 / Monthly (All-in-One Phone, Team Messaging, and Video Conferencing.)