Skip to content
TrustList
Linphone logo
Softphone Software

Linphone

Open source SIP softphone and VoIP toolkit for voice, video and secure messaging

Write a review
Get a quoteWrite a Review
Own this listing? Claim it
Linphone cover

About Linphone

Linphone is an open source SIP phone for voice and video calls and instant messaging on mobile and desktop. It comes with a wider set of VoIP components, including a library, a SIP server and an account platform, which developers can build on.

Main features

  • Softphone app: HD audio and video calls, group meetings and messaging on smartphones, tablets and desktops.
  • VoIP library: one API for SIP calling and messaging features.
  • SIP server: proxy, presence and conference modules.
  • Account platform: web API, provisioning and admin tools for user accounts.
  • Security modules: end-to-end encryption using the Signal Protocol, plus post-quantum cryptography.
  • Anti-blocking: helps overcome VoIP blocking and firewall restrictions.

Who it works with

Businesses and developers who need secure calling and messaging are the audience.

Key facts

  • Licence type: open source
  • Encryption: end-to-end for messages

Profile written by TrustList from the business's own published information, Oct 2026.

Categories & features

Rankings

As of 2026-10-06. Organic ranks only; sponsored placements are never ranks.

Request a demo or quote from Linphone

Protected by reCAPTCHA — Google Privacy Policy and Terms apply.

By sending, you agree we may share your request and contact details with the provider once you confirm your email.

Reviews

Write the first review of Linphone

Used it? Your experience helps other buyers decide.

Write a review

Questions & answers

No questions yet. Be the first to ask about Linphone.

Linphone alternatives

Similar listings buyers compare against this one.

Compare side by side
Express Talk logo

Express Talk

Express Talk is softphone software from NCH Software that makes computer-to-computer and VoIP telephone calls on PC and Mac

VTALL logo

VTALL

H.323 softphone for enterprise telephony with call logging and recording, from IP blue

Hosted Phone Systems logo

Hosted Phone Systems

Cloud-based VoIP phone system from Acefone for business teams and contact centres

OnSIP logo

OnSIP

Hosted VoIP business phone system with apps, video calling and a free softphone

SmartLine logo

SmartLine

Mobile app that adds a second business phone number to a smartphone

Keep exploring

More on TrustList

Everything here links back to the same verified catalogue. Pick your next stop.