Kaidan

Spec sheet

Product

Kaidan is a chat app that uses the open XMPP (Jabber) protocol, so users are not tied to one service provider.Read 11 Oct 2026 · kaidan.im

Account support

Kaidan supports using multiple accounts simultaneously.Read 11 Oct 2026 · kaidan.im

Accounts

Kaidan supports using multiple accounts simultaneously.Read 11 Oct 2026 · kaidan.im

Audio and video

Kaidan 0.15.0 introduced experimental audio and video calls; the maker said calls were only supposed to work on Linux at that time and some setups might not work properly.Read 11 Oct 2026 · kaidan.im

Availability

The download page lists a Linux Flatpak and source code for the stable release.Read 11 Oct 2026 · kaidan.im

Calls

Audio and video calls were added as experimental support, and the release notes say they were only intended to work on Linux at that time.Read 11 Oct 2026 · kaidan.im

Chats

The app supports group chats, and its 0.10.0 release describes invitations, participant lists, mentions, and public or private group chat filtering.Read 11 Oct 2026 · kaidan.im

Current version

The site lists version 0.16.0, released July 21, 2026, as the current version.Read 11 Oct 2026 · kaidan.im

Development

The project joined KDE and uses KDE’s GitLab instance, KDE Invent, for code hosting and contributions.Read 11 Oct 2026 · kaidan.im

Encryption

Kaidan supports end-to-end encryption with OMEMO 2 for messages, files, and metadata.Read 11 Oct 2026 · kaidan.im

End-to-end encryption

Kaidan supports end-to-end encryption via OMEMO 2 and Automatic Trust Management; encryption is enabled by default when a contact supports it.Read 11 Oct 2026 · kaidan.im

Group chats

Kaidan supports group chats, and its 2024 release notes say group chat features require an XMPP provider that supports MIX-Core, MIX-PAM, and MIX-Admin.Read 11 Oct 2026 · kaidan.im

Media

Kaidan supports audio messages, video messages, file sharing, and a media viewer for browsing chat media.Read 11 Oct 2026 · kaidan.im

Media sharing

Users can share files and queue media uploads or downloads to start when they are online.Read 11 Oct 2026 · kaidan.im

Media viewer

Kaidan 0.16.0 added a viewer for browsing chat media chronologically and playing music and videos in the app.Read 11 Oct 2026 · kaidan.im

Messaging features

Kaidan supports message reactions, read markers, drafts, message search, and chat pinning.Read 11 Oct 2026 · kaidan.im

Password storage

Kaidan stores passwords in a system password manager when available; otherwise, it can store them in an unencrypted file and migrate them when a password manager becomes available.Read 11 Oct 2026 · kaidan.im

Provider choice

During account creation, users can filter XMPP providers by properties such as data storage country and renewable energy use.Read 11 Oct 2026 · kaidan.im

Provider integration

Kaidan uses XMPP Providers for account registration and lets users try a different provider during automatic registration.Read 11 Oct 2026 · kaidan.im

Search

Kaidan provides search for chats and messages, with the search field integrated into the main toolbar.Read 11 Oct 2026 · kaidan.im

Security limitation

The maker says Kaidan is not yet stable and does not consider its security as good as that of leading chat apps.Read 11 Oct 2026 · kaidan.im

Stability

The site says Kaidan does not yet have all basic features and still has some stability issues.Read 11 Oct 2026 · kaidan.im

Voice messages

Kaidan supports recording voice messages by pressing and holding the record button, then sends the message when the button is released.Read 11 Oct 2026 · kaidan.im

Where Specifiction places it

• Encrypted Messaging Apps#30 of 437.3