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Quaternion

quaternion · v0.0.97.1 • deprecated

5
6.0

IM client for Matrix

brew install --cask quaternion
4
30-day installs
12
90-day installs
59
365-day installs
Install trend
Trust Score 5/10
Open source (GPL-3.0) +3
Active development +0
Licensed +1
No auto-updates +0
Deprecated +0
Established (>1yr) +1
Low installs +0

Review

Mar 11, 2026

Quaternion is a Matrix protocol instant messaging client offering a modern, cross-platform interface. It appeals to users seeking a decentralized communication alternative with advanced features like end-to-end encryption and supports Matrix's ecosystem.

Serves as an instant messaging client for the Matrix protocol, providing a Qt-based interface for real-time communication.

Maturity: The project is actively developed but remains in an early stage with some resolved bugs and open issues.

Community: Hacker News discussions focus on quaternions in 3D engines, not the app, indicating limited community traction around the client itself.

Pros

  • + Cross-platform support with a modern UI
  • + Open-source with active development
  • + Supports Matrix features like end-to-end encryption

Cons

  • - Early-stage with some resolved bugs
  • - Limited community discussion and traction
689
Stars
113
Forks
146
Issues
GPL-3.0
License
C++Last commit: Jan 24, 2026

Community Mentions

Positive sentiment Negative sentiment Neutral / unknown