FreePBX is an open-source GUI (graphical user interface) that controls and manages Asterisk (PBX), an open-source communication server.
Best PBX in a Flash Alternatives ranked by AI · updated May 2025
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PBX in a Flash is an open-source Asterisk-based PBX system that offers a complete phone system platform with various features
Price: Free
🎯 pbxinaflash.com
Top 6 PBX in a Flash alternatives
3CX is a software-based private branch exchange (PBX) system for unified communications that works with popular IP phones, SIP trunks, and Gateways....
Starting at $0 for the standard edition
Elastix is an open-source unified communications server software that integrates the best tools available for Asterisk-based PBXs into a single, easy-to-use interface.
Asterisk is an open-source framework for building communications applications. It turns an ordinary computer into a communications server.
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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