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Hydrogen

Web client for Matrix

Matrix & XMPP ★ 714 stars Easy setup Apache-2.0

Lightweight matrix client with legacy and mobile browser support

Official siteSource code

Strengths

  • Released under the Apache-2.0 license
  • Easy to set up — beginner-friendly
  • Written in TypeScript
  • Tiny footprint — runs in 50 MB RAM

Is Hydrogen secure?

OSV.dev has no published security advisories for Hydrogen's repository. No known vulnerabilities is not proof of security: it means none have been publicly catalogued.

Source: OSV.dev, checked 2026-10-14. How this is measured.

Health badge

Maintain Hydrogen? Add its health score to your README. The badge links back to this page.

SelfHostIndex: 47 · fair

Markdown
[![SelfHostIndex health score for Hydrogen](https://selfhostindex.com/badge/hydrogen.svg)](https://selfhostindex.com/app/hydrogen/)
HTML
<a href="https://selfhostindex.com/app/hydrogen/"><img src="https://selfhostindex.com/badge/hydrogen.svg" alt="SelfHostIndex health score for Hydrogen"></a>
reStructuredText
.. image:: https://selfhostindex.com/badge/hydrogen.svg
   :alt: SelfHostIndex health score for Hydrogen
   :target: https://selfhostindex.com/app/hydrogen/

The score is recomputed on every nightly rebuild from public repository data — see how it is calculated.

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