Asterisk is an open-source framework for building communications applications. It turns an ordinary computer into a communications server.
Best 3CX Alternatives ranked by AI · updated May 2025
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3CX is a software-based private branch exchange (PBX) system for unified communications that works with popular IP phones, SIP trunks, and Gateways. It provides features like video conferencing, web conferencing, and mobile apps.
Price: Starting at $0 for the standard edition
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Top 6 3CX alternatives
FreePBX is an open-source GUI (graphical user interface) that controls and manages Asterisk (PBX), an open-source communication server.
Grandstream UCM Series is a series of IP PBX appliances designed for small to medium businesses. It offers features like video calling,...
Pros
- All-in-one solution with hardware and software
- Intuitive web interface for easy management
Cons
- Limited scalability for large enterprises
- Additional costs for advanced features
Starting at $299
Linphone is an open-source voice over IP service and SIP client. It allows you to make voice and video calls, send instant...
X-Lite is a feature-rich VoIP softphone for Windows and macOS that allows for high-quality audio and video calls.
Free with limited features, Paid version available for advanced features
Zoiper is a VoIP softphone that supports various platforms and offers features like video calling, messaging, and call recording.
Free version available, paid options starting from $39.95
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