Zoiper 3.7 is a multi-platform SIP and IAX2 softphone designed for high-quality voice and video calls over the internet. It gained popularity for being "resource-light," making it an ideal choice for users with older hardware or those who want to minimize background CPU usage during business operations. Key Features of Version 3.7 Dual Protocol Support : Native support for both SIP and IAX2 protocols. Low Resource Footprint
: Supports TLS, SRTP, and ZRTP encryption for secure, eavesdrop-proof calling. Zoiper 3.7 Download
Do not install over a newer version of Zoiper. If you have Zoiper 5, uninstall it first, or install Zoiper 3.7 in a completely separate directory to avoid file conflicts. Zoiper 3
You can find download options for various platforms on the Zoiper 3 Download Page . Low Resource Footprint : Supports TLS, SRTP, and
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