https://vata.com/knowledge-base/zultys-mobile-softphone-configuration-and-troubleshooting/
Zultys Mobile Softphone Configuration and Troubleshooting - Vatacom
Sep 21, 2022 - In this article: Zultys Mobile Softphone Configuration and Troubleshooting - how to conifgure SIP ports and protocol to avoid problems.
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https://www.siperb.com/
SIPERB - WebRTC powered Softphone for Browsers, Mobile and Desktop
Siperb is a modern Softphone powered with WebRTC and a free hosted SIP Proxy that connects to your VoIP PBX like Asterisk, FreeSWITCH or any SIP based PBX.
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https://www.counterpath.com/white-label/
White Label Softphone for Mobile & Desktop | CounterPath
White Label your VoIP Softphone with custom branding Deploy a custom branded softphone - fully featured with calling, conferencing, provisioning and more....
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