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3CXPhone (3CXPhone.exe). 3CXPhone is a program designed to help users make calls to any mobile or landline number from their Windows OS.
Lightweight Windows softphone for free VoIP calling with simple setup and flexible SIP support
3CXPhone is a free Windows softphone that lets you call any mobile or landline number with no purchase, subscription, or hidden fees. Designed as a mobile-style dialer for your desktop, it delivers an easy entry point for free VoIP calling for PC and reliable communication with your preferred SIP provider.
After a quick installation, the interface presents a phone-shaped GUI where you can start placing calls, manage contacts, and handle essential telephony tasks. While some interface elements are crowded, the app remains a practical Windows softphone app for users seeking a simple, provider-agnostic VoIP tool.
3CXPhone includes core calling utilities such as blind transfers, call recording, and a clear personal call history view. It supports G.711, GSM, and Speex codecs and can automatically configure many settings for an easier desktop SIP client setup. Although a few basic features feel unfinished, the software stays useful for flexible VoIP communication without restrictions.
• Free calling to any mobile or landline number from Windows OS • Blind transfers, call recording, and built-in call history • Supports G.711, GSM, and Speex codecs • Works with popular VoIP providers without being tied to one • Auto-provisioning for quick and simple setup