A platform for community discussion. Free, open, simple.
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.tx Merge remote-tracking branch 'upstream/master' into update-locale-vie… Jan 26, 2016
app remove unecessary '.limit(1)' Feb 24, 2017
bin Removed the fallback mailcatcher install command Dec 13, 2016
config FIX: i18n integrity specs Feb 24, 2017
db index should have always been unique Feb 22, 2017
docs update sendgrid info Feb 6, 2017
images fix image location Sep 11, 2014
lib FIX: i18n integrity specs Feb 24, 2017
log Initial release of Discourse Feb 5, 2013
packaging/debian Fix .pkgr.yml so that discourse can be packaged with https://pkgr.io. Mar 26, 2014
plugins FIX: i18n integrity specs Feb 24, 2017
public FEATURE: new invite acceptance page, where username can be chosen and… Feb 15, 2017
script phpBB3 importer: Fix the link regex Feb 5, 2017
spec FIX: i18n integrity specs Feb 24, 2017
test FIX: eradicate I18n fallback issues 💣 Feb 24, 2017
vendor FIX: Silence DOMException errors when running phantomjs Feb 17, 2017
.codeclimate.yml FEATURE: Replace composer editor with ember version Nov 6, 2015
.editorconfig Set trim_trailing_whitespace false for markdown Jun 25, 2016
.env.sample Basic Heroku integration Mar 13, 2013
.eslintignore REFACTOR: PreloadStore to ES6 Jul 11, 2016
.eslintrc Lint inner function declarations to prevent Safari breakage Jul 14, 2016
.gitattributes prevent crlf on yml files Apr 5, 2013
.gitignore Ignore all db dumps. Nov 2, 2016
.image_optim.yml let's try optipng instead Jul 22, 2015
.mention-bot Make mention bot assign reviewers for collaborators as well. Jan 12, 2017
.pkgr.yml Fix .pkgr.yml so that discourse can be packaged with https://pkgr.io. Mar 26, 2014
.rspec Initial release of Discourse Feb 5, 2013
.ruby-gemset.sample rvm has offically depreicated .rvmrc and recommends using .ruby-versi… May 23, 2013
.ruby-version.sample Bump .ruby-version Sep 29, 2016
.travis.yml Revert "Run Travis against 2.4.0 as well." Jan 9, 2017
Brewfile Adjust Brewfile to follow homebrew-bundle syntax Aug 11, 2015
CONTRIBUTING.md Proper long form for CLA Sep 10, 2015
COPYRIGHT.txt fix trademark Jun 26, 2013
Gemfile drop thin, it is no longer supported Jan 20, 2017
Gemfile.lock FIX: Don't raise `DownloadTooLarge`, just do nothing Feb 17, 2017
LICENSE.txt Initial release of Discourse Feb 5, 2013
Procfile Standardize on 'worker' for sidekiq Procfile entry (expected by build… Oct 8, 2013
README.md update mobile android screenshot for 1.7 Jan 10, 2017
Rakefile Mark all files with a shebang line as executable May 12, 2015
Vagrantfile fix link to result in instant download Jun 2, 2016
adminjs Initial release of Discourse Feb 5, 2013
config.ru Allow running discourse with prefix with passenger without requiring … Apr 10, 2013
d add wrappers for mailcatcher and sidekiq Dec 12, 2016
discourse.sublime-project FEATURE: better email in support Jan 18, 2016
jsapp Initial release of Discourse Feb 5, 2013



Discourse is the 100% open source discussion platform built for the next decade of the Internet. It works as:

  • a mailing list
  • a discussion forum
  • a long-form chat room

To learn more about the philosophy and goals of the project, visit discourse.org.


Atom   Soylent

Browse lots more notable Discourse instances.


  1. If you're brand new to Ruby and Rails, please see Discourse as Your First Rails App or our Discourse Vagrant Developer Guide, which includes a development environment in a virtual machine.

  2. If you're familiar with how Rails works and are comfortable setting up your own environment, use our Discourse Advanced Developer Guide.

Before you get started, ensure you have the following minimum versions: Ruby 2.3+, PostgreSQL 9.3+, Redis 2.6+. If you're having trouble, please see our TROUBLESHOOTING GUIDE first!

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 business class hosting, see discourse.org/buy.


Discourse is built for the next 10 years of the Internet, so our requirements are high:

Browsers Tablets Smartphones
Safari 6.1+ iPad 2+ iOS 7+
Google Chrome 23+ Android 4.3+ Android 4.3+
Internet Explorer 11+ Windows 8 Windows Phone 8
Firefox 16+

Built With

  • Ruby on Rails — Our back end API is a Rails app. It responds to requests RESTfully in JSON.
  • Ember.js — Our front end is an Ember.js app that communicates with the Rails API.
  • PostgreSQL — Our main data store is in Postgres.
  • Redis — We use Redis as a cache and for transient data.

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


Build Status Code Climate

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.
  2. Read and sign the Electronic Discourse Forums Contribution License Agreement.
  3. Dig into CONTRIBUTING.MD, which covers submitting bugs, requesting new features, preparing your code for a pull request, etc.
  4. Always strive to collaborate with mutual respect.
  5. Not sure what to work on? We've got some ideas.

We look forward to seeing your pull requests!


We take security very seriously at Discourse; all our code is 100% open source and peer reviewed. Please read our security guide for an overview of security measures in Discourse, or if you wish to report a security issue.

The Discourse Team

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 / License

Copyright 2014 - 2017 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:


Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the specific language governing permissions and limitations under the License.

Discourse logo and “Discourse Forum” ®, Civilized Discourse Construction Kit, Inc.


Discourse is built with love, Internet style.