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Software · Internet & communication

Quadrix

Minimal, simple, multi-platform chat client for the Matrix protocol.

  • Completely free
  • Linux
  • Open source

Overview

Quadrix is a messaging program, available on Linux.

Services and protocols mentioned: Matrix.

Overview written by LicitPro from the documentation published by the authors and the cited sources; we have not tried the resource ourselves.

Excerpts that establish this information
  • “Minimal, simple, multi-platform chat client for the Matrix protocol” — Flathub, 10 November 2026

At a glance

All of Quadrix is free: no feature is locked behind a paid plan, and its code is open.

Its licence (GPL-3.0+) is a copyleft open source licence: you may use, study, modify and redistribute it, including commercially; modified versions must keep the same licence.

Strengths

  • Open source code
  • Commercial use allowed

About

- No data collection - Completely free, no ads - Does not support End-to-End Encryption - Video-conferencing (uses Element Call -- https://github.com/vector-im/element-call#readme) - Desktop apps for Windows, MacOS, and Linux (amd64, arm64, armhf) - Mobile apps for Android and iOS - Unique top-down messaging feed - Ideally used with a private Matrix homeserver -- https://matrix.org/docs/guides/installing-synapse - Open source on github -- https://github.com/alariej/quadrix - Interested to sponsor this project? -- https://github.com/sponsors/alariej

Description from Flathub — AppStream (Flathub)

Sources and checks

  • Facts collected from Flathub (credit card, source code, publisher, licence, free status, platforms, commercial use, version) —
  • Last technical check: 8 November 2026
  • Description from Flathub — AppStream (Flathub)

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