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Spectrum

Open-source platform for building online communities

Forums & Community Archived ★ 10.8k stars Hard setup BSD-3-Clause

This project is archived. Upstream development has stopped, so expect no new features or security fixes. Consider an actively maintained forums & community alternative.

Spectrum is an open-source platform for creating powerful online communities with threaded conversations and channels. It blends the immediacy of chat with the durability of forum-style threads.

Official siteSource code

Key features

  • Threaded conversations
  • Community channels
  • Real-time updates
  • Public and private spaces

Strengths

  • Released under the BSD-3-Clause license
  • First-class Docker support for quick deployment
  • Mature project with 10.8k GitHub stars
  • Written in JavaScript

Is Spectrum secure?

OSV.dev has no published security advisories for Spectrum'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.

Spectrum replaces

Self-hosted Discord alternativesSelf-hosted Discourse alternatives

Health badge

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

SelfHostIndex: 15 · archived

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

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

Compare Spectrum

3 head-to-head comparisons.

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