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Software · Internet & communication

Cinny

Yet another Matrix client with simple, elegant and secure interface.

  • Completely free
  • Linux
  • Open source

Overview

Cinny is a messaging program, available on Linux.

Features described in its Flathub listing and on its official website: end-to-end encryption and Markdown support.

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
  • “A Matrix client where you can enjoy the conversation using simple, elegant and secure interface protected by e2ee with the power of open source.” — official website, 10 November 2026
  • “A Matrix client where you can enjoy the conversation using simple, elegant and secure interface protected by e2ee with the power of open source.” — official website, 10 November 2026
  • “Features: User-friendly design, Login and register, Full space support, Encryption and emoji verification, Ability to create new rooms and tweak settings, Support replies, markdown, message editing, Dark, light, and…” — Flathub, 10 November 2026

At a glance

Cinny is completely free: it is open source software, and every feature is available without paying or subscribing.

Its licence (AGPL-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

Cinny is a matrix.org client focusing primarily on simple, elegant and secure interface protected by e2ee with the power of open source. Features: User-friendly design, Login and register, Full space support, Encryption and emoji verification, Ability to create new rooms and tweak settings, Support replies, markdown, message editing, Dark, light, and black themes.

Description from Flathub — AppStream (Flathub)

Sources and checks

  • Facts collected from Flathub (credit card, publisher, licence, free status, platforms, commercial use, version) —
  • Facts collected from Official plan pages (pricing, licence, terms) (commercial use) —
  • Last technical check: 6 November 2026
  • Description from Flathub — AppStream (Flathub)

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