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ZoipertSIP
Freemium

Free softphone, with paid versions sold on the Zoiper site.

 Free

Free and open source under the BSD 3-Clause licence.

Windows, macOS, Linux, Android, iOS, Browser extension Windows
  • Native apps on desktop and mobile
  • TLS, SRTP and ZRTP call encryption
  • Portable and small, with JSON settings
  • Programmable buttons and BLF like a bench phone
  • Proprietary, with some features in paid editions
  • Encryption depends on server support
  • Windows only
  • Basic version has no video support
Downloadable app, Browser extension Downloadable app
Closed source Open source
License not stated License: BSD-3-Clause
Not stated if an account is needed Not stated if an account is needed
Not stated if it works offline Not stated if it works offline

Checked September 24, 2026

Checked October 2, 2026

Catalog facts only. Anything “not stated” is unconfirmed. Check full listings for details.