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A platform for community discussion. Free, open, simple. https://www.discourse.org
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  • JavaScript 35.5%
  • HTML 3.1%
  • SCSS 2.8%
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Gerhard Schlager 39521483c0 MT: Drop dead defensive code mutation testing flagged [skip ci]
Two spots where a guard can never fire, so mutating them away leaves the
tests green — dead code the suite can't cover because it does nothing:

- Partitioner#sampled_boundaries: `[ceil, 1].max` floored the sample
  stride at 1, but `total` is already >= 1 by the guard above, so the ceil
  is always >= 1. And `boundaries.size < count` capped the result, but
  rounding the stride up already keeps every-Nth sampling to at most
  `count` boundaries. I checked both across every total/count from 1 to
  500: neither guard ever changes the outcome.

- Reporting::Plain#report_finish: `line = +"..."` asked for a mutable
  string, but an interpolated string isn't frozen to begin with, so the
  unary `+` was a no-op before the later `line << ...`.
2026-07-08 00:26:08 +02:00
.agents
.claude
.cursor/rules
.devcontainer DEV: Bump devcontainer image (#40684) 2026-06-09 15:02:51 +01:00
.github MT: Reword inline comments in plainer English 2026-07-07 10:10:24 +02:00
.skills MT: Rewrite the mutant skill in our own words 2026-07-07 22:49:46 +02:00
.vscode DEV: Replace JS build system with Rolldown (#35963) 2026-05-29 11:11:55 +01:00
.zed
app SECURITY: search_users usernames parameter bypasses user-visibility scoping (#41477) 2026-07-06 13:06:12 -05:00
bin DEV: Add per-test SQL/Redis/network capture RSpec formatter (#40632) 2026-06-16 09:47:54 +08:00
config FEATURE: Add nested replies category conversion (#41236) 2026-07-06 08:22:22 -05:00
db FEATURE: Show bounce rate and average session duration on the dashboard (#40936) 2026-07-03 10:49:32 +08:00
docs DEV: Bump eslint/lint-configs, and correct violations (#41321) 2026-07-01 10:39:57 +01:00
frontend DEV: Bump glint to 1.8 and drop JSDoc import() extension workarounds (#41493) 2026-07-06 22:06:35 +01:00
images
lib FEATURE: Add nested replies category conversion (#41236) 2026-07-06 08:22:22 -05:00
log
migrations MT: Drop dead defensive code mutation testing flagged [skip ci] 2026-07-08 00:26:08 +02:00
patches DEV: Replace JS build system with Rolldown (#35963) 2026-05-29 11:11:55 +01:00
plugins DEV: Bump prettier-plugin-ember-template-tag and reformat (#41489) 2026-07-06 19:18:44 +01:00
public DEV: Refactor worker and WASM loading for media-optimization-worker (#40793) 2026-06-12 09:18:32 +01:00
script FEATURE: Support AI agent workflow uploads and runner (#41042) 2026-06-19 18:06:17 +02:00
spec SECURITY: search_users usernames parameter bypasses user-visibility scoping (#41477) 2026-07-06 13:06:12 -05:00
stylelint-rules DEV: Exploring a token system (#38700) 2026-04-23 13:47:45 -05:00
test DEV: Clean up smoke-test (#40066) 2026-05-15 12:28:41 +02:00
themes DEV: Remove reporting_improvements upcoming change (#41259) 2026-07-01 07:52:02 +08:00
vendor DEV: move discourse gifs to core (#40162) 2026-06-10 11:35:44 +04:00
.annotaterb.yml
.editorconfig
.git-blame-ignore-revs
.gitattributes
.gitignore DEV: Replace JS build system with Rolldown (#35963) 2026-05-29 11:11:55 +01:00
.ignore
.jsdoc
.licensed.yml DEPS: Bump oauth from 1.1.3 to 1.1.5 (#40263) 2026-06-04 01:06:17 +02:00
.licensee.json DEV: Bump vitest and vite (#40450) 2026-06-08 10:29:44 +01:00
.npmrc
.pnpmfile.cjs
.prettierignore
.prettierrc.cjs
.rspec
.rspec_parallel
.rubocop.yml DEV: Enable Style/RedundantSelf rubocop rule (#40098) 2026-05-19 19:27:45 +02:00
.ruby-gemset.sample
.streerc
AGENTS.md
AI-AGENTS.md DEV: Optimise number of lint calls in AI-AGENTS.md (#40594) 2026-06-05 11:48:49 +08:00
Brewfile
CLAUDE.md
CODEOWNERS
config.ru
CONTRIBUTING.md
COPYRIGHT.md
d
discourse.sublime-project
eslint.config.mjs DEV: Replace JS build system with Rolldown (#35963) 2026-05-29 11:11:55 +01:00
Gemfile FEATURE: Route all GitHub API requests through one rate-limited client (#40637) 2026-06-15 10:59:10 +02:00
Gemfile.lock MT: Run conversion steps concurrently and split the heavy ones across cores 2026-07-03 11:48:25 +02:00
GEMINI.md
lefthook.yml DEV: Remove ember-template-lint (#40077) 2026-05-15 20:54:13 +01:00
LICENSE.txt
package.json DEV: Bump glint to 1.8 and drop JSDoc import() extension workarounds (#41493) 2026-07-06 22:06:35 +01:00
pnpm-lock.yaml DEV: Bump glint to 1.8 and drop JSDoc import() extension workarounds (#41493) 2026-07-06 22:06:35 +01:00
pnpm-workspace.yaml DEV: Configure pnpm builtDependencies (#41332) 2026-07-01 15:26:00 +01:00
Rakefile
README.md DEV: Link to Docker CLI documentation (#40375) 2026-05-28 22:10:18 +02:00
stylelint.config.mjs DEV: Exploring a token system (#38700) 2026-04-23 13:47:45 -05:00
translator.yml
tsconfig-base.json
tsconfig.json
versions.json DEV: Begin development of v2026.7.0-latest 2026-06-30 16:19:27 +02:00

The online home for your community.

github-readme

You can self-host Discourse on your own infrastructure. But if you'd rather skip the setup, maintenance, and server management, we offer official Discourse hosting.

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Discourse is a 100% open-source community platform for those who want complete control over how and where their site is run.

Our platform has been battle-tested for over a decade and continues to evolve to meet users needs for a powerful community platform.

With Discourse, you can:

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To learn more, visit discourse.org and join our support community at meta.discourse.org.

Here are just a few of the incredible communities using Discourse:

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Development

To get your environment set up, follow one of the setup guides:

Before you get started, ensure you have the following minimum versions: Ruby 3.4+, PostgreSQL 15, Redis 7.

For more information, check out the Developer Documentation.

Setting up Discourse

If you want to set up a Discourse forum for production use, see our Discourse Install Guide.

If you're looking for official hosting, see discourse.org/pricing.

Requirements

Discourse supports the latest, stable releases of all major browsers and platforms:

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Additionally, we aim to support Safari on iOS 16.4+.

Built With

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Plus lots of Ruby Gems, a complete list of which is at /main/Gemfile.

Contributing

Build Status

Discourse is 100% free and open source. We encourage and support an active, healthy community that accepts contributions from the public including you!

Before contributing to Discourse:

  1. Please read the complete mission statements on discourse.org. Yes we actually believe this stuff; you should too.
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We look forward to seeing your pull requests!

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Security fixes are listed in the release notes for each version.

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The original Discourse code contributors can be found in AUTHORS.MD. For a complete list of the many individuals that contributed to the design and implementation of Discourse, please refer to the official Discourse blog and GitHub's list of contributors.

Copyright 2014 - 2025 Civilized Discourse Construction Kit, Inc.

Licensed under the GNU General Public License Version 2.0 (or later); you may not use this work except in compliance with the License. You may obtain a copy of the License in the LICENSE file, or at:

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To guide our ongoing effort to build accessible software we follow the W3Cs Web Content Accessibility Guidelines (WCAG). If you'd like to report an accessibility issue that makes it difficult for you to use Discourse, email accessibility@discourse.org. For more information visit discourse.org/accessibility.

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Discourse is built with love, Internet style.

For over a decade, our amazing community has helped shape Discourse into what it is today. Your support, feedback, and contributions have been invaluable in making Discourse a powerful and versatile platform.

Were deeply grateful for every feature request, bug report, and discussion that has driven Discourse forward. Thank you for being a part of this journey—we couldnt have done it without you!