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SPECIFICTION
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Jami vs Kontalk

Jami

jami.net

Kontalk

kontalk.org

Side by side

FigureJamiKontalk
Price fromFreeFree
Free planYesYes
Free trial——
Open sourceYes—
WebYes—
WindowsYes—
macOSYes—
LinuxYes—
iOSYes—
AndroidYesYes
APIYes—
Self-hostedYes—
Plans published11
Spec score · Secure Messaging Apps8.8 (#1)7.3 (#31)
Spec score · Encrypted Messaging Apps8.8 (#2)7.2 (#34)
EncryptionJami states that its communications use end-to-end encryption with perfect forward secrecy and comply with the X.509 standard.The site says client-to-server and server-to-server channels are fully encrypted, and servers cannot decrypt end-to-end encrypted messages.
PlatformsOfficial documentation lists GNU/Linux, Windows, macOS, Android, iOS, Android TV and web access.The network site says Kontalk is available for Android and desktop.
SupportJami directs users to its forum for questions and lists [email protected] as a contact address.The project links users to a help wiki and a community forum for discussion.

Plans

Jami

  • JamiFree

Jami pricing →

Kontalk

  • KontalkFree

Kontalk pricing →

In their own words

Jami

Jami is free/libre software for private messaging and calls, with end-to-end encrypted communications and peer-to-peer connections. It offers instant messaging, audio and video calls, group chats, and recorded audio and video messages. Users can hold video conferences and create rendezvous points without third-party hosting, as well as share files or screens and stream media. Jami says it does not require a server to relay data between users; it also states that communications use perfect forward secrecy and comply with the X.509 standard. One account can link multiple devices, and account creation does not require personal information. Jami can also function as a regular SIP client. Optional extensions include green screen, watermark, auto answer, local AI transcription, audio filter, and video segmentation. These extensions are unavailable to iOS users, and features vary by client. Platforms listed include Android, iOS, Linux, macOS, web, and Windows, along with API and extension access. Jami also provides an OpenClaw channel plugin; bot accounts and API access are supported on desktop Linux, macOS, and Windows. The project is led by Savoir-faire Linux Inc. and supported by a global community of free software contributors.

Visit jami.net

Kontalk

Kontalk has no write-up on Specifiction yet; its figures are above.

Visit kontalk.org