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JsSIP vs SIP.js vs Browser-Phone: Choosing an Open-Source WebRTC SIP Stack in 2026

Justin

2 June 2026

JsSIP and SIP.js give you SIP. Browser-Phone gives you a phone. A practical three-way comparison…

Browser Phone

Browser Phone 0.3.x is available as a free, open source project available at: https://github.com/InnovateAsterisk/Browser-Phone

The Browser Phone project version 4.0 will be developed under Siperb. Siperb WebRTC powered Softphone is already hosted and offers a mobile version, and the necessary SIP to WebRTC proxy to connect to your PBX.

The Siperb Softphone is released as both a Web Application, and a Mobile Application for both Android and Apple devices. The Mobile application and the Web Application is featured with Push notifications for inbound calls.

Siperb offers much more, including: Hosting, Provisioning, Transcoding (from DTLS to regular RTP), and a complete history of calls and conversations. For more information on Siperb visit: https://www.siperb.com/

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JsSIP vs SIP.js vs Browser-Phone: Choosing an Open-Source WebRTC SIP Stack in 2026