Initial release9 May 2018; 3 years ago (2018-05-09)[1]
Stable release
1.4[2] Edit this on Wikidata / 15 November 2021; 39 days ago (15 November 2021)
Preview release
1.3.6[3] Edit this on Wikidata / 14 July 2021; 23 July 2021; 31 August 2021; Error: first parameter cannot be parsed as a date or time. (14 July 2021; 23 July 2021; 31 August 2021)
Written inJava, Kotlin [4]
Operating systemAndroid
TypeMesh networking, Instant Messaging

Briar is an open-source software communication technology, intended to provide secure and resilient peer-to-peer communications with no centralized servers and minimal reliance on external infrastructure. Connections are made through Bluetooth, WiFi, or over the internet via Tor and all private communication is end-to-end encrypted. Relevant content is stored in encrypted form on participating devices. Long-term plans for the project include "blogging, crisis mapping and collaborative document editing."

The initial target audience for Briar includes "activists, journalists and civil society" with plans to make the system "simple enough to help anyone keep their data safe."[5] As the ability to function in the absence of internet infrastructure may also make the project valuable to disaster response and aid organisations, the developers are working with the Open Humanitarian Initiative and Taarifa.[6] Ultimately, the developers aim to create a system which is "as simple to use as WhatsApp, as secure as PGP, and that keeps working if somebody breaks the Internet."[6]

Briar's source code is published as free software and is distributed under the terms of the GNU GPL-3.0-or-later license.[7] It was audited by Cure53 and spoken highly of in a report delivered 20 March 2017, and was recommended to be given a second audit after development completes.[8][9]

See also


  1. ^ "Secure P2P Messenger Releases First Version, Receives New Funding". Briar. 9 May 2018. Retrieved 17 May 2016.
  2. ^ "Briar 1.4 released - offline app sharing, message transfer via SD cards and USB sticks".
  3. ^
  4. ^ "briar / briar · GitLab". Briar. Retrieved 2021-07-30.
  5. ^ "Wired".
  6. ^ a b "Knight News Challenge". Archived from the original on 2016-11-08. Retrieved 2014-07-24.
  7. ^ "GitLab project repository". Archived from the original on 2017-07-31. Retrieved 2017-07-25.
  8. ^ "Pentest-Report Briar Project App & Protocol 03.2017" (PDF).
  9. ^ "Darknet Messenger Releases Beta, Passes Security Audit".