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Tacit
Beta

A Matrix messenger with a strong focus on modern interaction patterns and a clean workflow for spaces, channels, DMs, and groups. It is a fork of Tammy with the UI/UX adapted for a more focused, desktop-first experience.

Homepage Source Code
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Features

Stable Features
  • End-to-end encryption
    End-to-end encryption, including media and calls if supported
  • Spaces
    Browse, join and manage Matrix spaces
  • Voice and Video Calls (1:1)
    1-to-1 voice/video calls
  • Threads
    Read, start and participate in threads
  • Legacy SSO
    Log in with Single Sign-On using the legacy API
  • Voice and Video Calls (Jitsi)
    Jitsi-based group calls
  • Multi-Account
    Log into multiple accounts at the same time using a single client instance
  • Multi-Language
    Client user interface supports multiple languages
  • OAuth 2.0
    Log in using the new API based on the OAuth 2.0/OIDC standard
  • Invisible Cryptography
    Simplified client user experience and improved security by enforcing device verification per MSC4153
Experimental Features
  • Voice and Video Calls (MatrixRTC)
    Matrix-native voice/video calls based on MSC4143 MatrixRTC
  • Simplified Sliding Sync
    Swift and efficient login and messaging using the next generation API from MSC4186

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