The mastodon downstream
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ThibG 7f9431c306 Play animated custom emoji on hover (#11348) 4 months ago
.circleci Fix check-i18n builds (#11084) 5 months ago
.dependabot Change dependabot update schedule from live to weekly (#10949) 6 months ago
.github Add sponsor button to GitHub web UI (#10814) 6 months ago
app Play animated custom emoji on hover (#11348) 4 months ago
bin Bump webpacker from 3.5.5 to 4.0.2 (#10277) 9 months ago
config Remove unused StatsD code and expose StatsD as a global variable (#11232) 4 months ago
db Fix old migrations failing because of new version of `strong_migrations` (#11018) 6 months ago
dist Cache error 410 responses in recommended nginx configuration (#10425) 8 months ago
lib Bump version to 2.9.2 (#11152) 5 months ago
log Initial commit 3 years ago
nanobox Resync Nanobox files with the 2.9.0 release (#11083) 6 months ago
public Disallow robots from indexing /interact/ (#10666) 7 months ago
spec Play animated custom emoji on hover (#11348) 4 months ago
streaming Improve streaming server security (#10818) 6 months ago
vendor Increase files checked by ESLint (#9705) 11 months ago
.buildpacks Add ffmpeg buildpack for scalingo (#8500) 1 year ago
.codeclimate.yml Replace from scss-lint to sass-lint (#10958) 6 months ago
.dockerignore Add .bundle to .dockerignore (#7895) 1 year ago
.editorconfig Add final newline to locale files (#2890) 2 years ago
.env.nanobox Rename S3_CLOUDFRONT_HOST to S3_ALIAS_HOST. (#8423) 1 year ago
.env.production.sample Add ES_PREFIX in .env.production.sample (#10087) 7 months ago
.env.test Do not test PAM authentication by default (#9027) 1 year ago
.env.vagrant update vagrant configs (#8706) 1 year ago
.eslintignore Increase files checked by ESLint (#9705) 11 months ago
.eslintrc.js Refactor icons in web UI to use Icon component (#9951) 10 months ago
.foreman Replace sprockets/browserify with Webpack (#2617) 2 years ago
.gitattributes Add .gitattributes file to avoid unwanted CRLF (#3954) 2 years ago
.gitignore Ignore elasticsearch directory (#7070) 1 year ago
.haml-lint.yml Added haml-lint and fix warnings (#2773) 2 years ago
.nanoignore Remove Storybook (#4397) 2 years ago
.nvmrc Upgrade Node.js to v8.x on nvmrc (#8023) 1 year ago
.profile Add ffmpeg and dependent packages as well as LD_LIBRARY_PATHs (#3276) 2 years ago
.rspec Adding a Mention model, test stubs 3 years ago
.rubocop.yml require rubocop-rails in .rubocop.yml (#10974) 6 months ago
.ruby-version Upgrade Ruby to 2.6.1 (#9956) 9 months ago
.sass-lint.yml Fix sass-lint config (#10982) 6 months ago
.slugignore Remove Storybook (#4397) 2 years ago
.yarnclean Replace from scss-lint to sass-lint (#10958) 6 months ago Bump version to 2.8.0rc1 (#10340) 8 months ago
Aptfile Adjust Aptfile for Heroku-18 stack (#8588) 1 year ago Fix unconverted PRs in the changelog (#11155) 5 months ago Add code of conduct from GitHub generator (#5674) 2 years ago Update translating platform has changed to crowdin ( (#11094) 5 months ago
Capfile remove capistrano/faster_assets from Capfile (#2737) 2 years ago
Dockerfile Docker: Remove dist-upgrade (#10822) 6 months ago
Gemfile Bump capybara from 3.22.0 to 3.24.0 (#11100) 5 months ago
Gemfile.lock Update fuubar dependency to 2.4.1 (#11248) 4 months ago
LICENSE Fix #49 - License changed from GPL-2.0 to AGPL-3.0 3 years ago
Procfile More robust PuSH subscription refreshes (#2799) 2 years ago Fix Procfile on OS X (#6748) 1 year ago Change translations badge in README to Crowdin (#11054) 6 months ago
Rakefile Initial commit 3 years ago
Vagrantfile Add clearer error when/if gpg fails to install (#10228) 9 months ago
app.json Change logo URL for Heroku and Scalingo (#4476) 2 years ago
babel.config.js New Crowdin translations (#11077) 5 months ago
boxfile.yml Resync Nanobox files with the 2.9.0 release (#11083) 6 months ago Fix rubocop issues, introduce usage of frozen literal to improve performance 3 years ago
crowdin.yml Update crowdin.yml 6 months ago
docker-compose.yml Upgrade redis in docker-compose.yml from 4 to 5 (#9063) 6 months ago
package.json Bump enzyme-adapter-react-16 from 1.7.1 to 1.14.0 (#11105) 5 months ago
postcss.config.js Increase files checked by ESLint (#9705) 11 months ago
priv-config TOR federation (#7875) 1 year ago
scalingo.json Add ffmpeg buildpack for scalingo (#8500) 1 year ago
yarn.lock Bump enzyme-adapter-react-16 from 1.7.1 to 1.14.0 (#11105) 5 months ago


GitHub release Build Status Code Climate Crowdin Docker Pulls

Mastodon is a free, open-source social network server based on ActivityPub. Follow friends and discover new ones. Publish anything you want: links, pictures, text, video. All servers of Mastodon are interoperable as a federated network, i.e. users on one server can seamlessly communicate with users from another one. This includes non-Mastodon software that also implements ActivityPub!

Click below to learn more in a video:



No vendor lock-in: Fully interoperable with any conforming platform

It doesn’t have to be Mastodon, whatever implements ActivityPub is part of the social network! Learn more

Real-time, chronological timeline updates

See the updates of people you’re following appear in real-time in the UI via WebSockets. There’s a firehose view as well!

Media attachments like images and short videos

Upload and view images and WebM/MP4 videos attached to the updates. Videos with no audio track are treated like GIFs; normal videos are looped - like vines!

Safety and moderation tools

Private posts, locked accounts, phrase filtering, muting, blocking and all sorts of other features, along with a reporting and moderation system. Learn more

OAuth2 and a straightforward REST API

Mastodon acts as an OAuth2 provider so 3rd party apps can use the REST and Streaming APIs, resulting in a rich app ecosystem with a lot of choice!


Tech stack:

  • Ruby on Rails powers the REST API and other web pages
  • React.js and Redux are used for the dynamic parts of the interface
  • Node.js powers the streaming API


  • PostgreSQL 9.5+
  • Redis
  • Ruby 2.4+
  • Node.js 8+

The repository includes deployment configurations for Docker and docker-compose, but also a few specific platforms like Heroku, Scalingo, and Nanobox. The stand-alone installation guide is available in the documentation.

A Vagrant configuration is included for development purposes.


Mastodon is free, open source software licensed under AGPLv3.

You can open issues for bugs you’ve found or features you think are missing. You can also submit pull requests to this repository, or submit translations using Weblate. To get started, take a look at If your contributions are accepted into Mastodon, you can request to be paid through our OpenCollective.

IRC channel: #mastodon on


Copyright © 2016-2019 Eugen Rochko & other Mastodon contributors (see

This program is free software: you can redistribute it and/or modify it under the terms of the GNU Affero General Public License as published by the Free Software Foundation, either version 3 of the License, or (at your option) any later version.

This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Affero General Public License for more details.

You should have received a copy of the GNU Affero General Public License along with this program. If not, see