The code powering
Yamagishi Kazutoshi e05606c8d0 Change logo URL for Heroku and Scalingo (#4476) 2 years ago
app Re-add outline (#4474) 2 years ago
bin Fix webpack-dev-server on Windows (#4000) 3 years ago
config i18n: update Persian translation (#4470) 2 years ago
db Add index favourites on account_id and id (#4360) 3 years ago
docs Fix redirect link on (#1595) 3 years ago
lib Bump to 1.5.0rc3 2 years ago
log Initial commit 4 years ago
nanobox [nanobox] Allow Full-size Uploads (#4123) 3 years ago
public Use consistent icons for web push notifications, same as web UI (#4426) 2 years ago
spec Count all URLs in text as 23 characters flat, do not count domain part of usernames (#4427) 2 years ago
streaming Gracefully stop streaming server (#4103) 3 years ago
vendor/assets Initial commit 4 years ago
.babelrc 🎄🔨 Force tree shake emojione (#4202) 3 years ago
.buildpacks Add heroku APT buildpack for scalingo. (#3051) 3 years ago
.codeclimate.yml Enable CodeClimate SCSS Lint checks (#2886) 3 years ago
.dockerignore Remove Storybook (#4397) 2 years ago
.editorconfig Add final newline to locale files (#2890) 3 years ago
.env.nanobox [nanobox] Add Automated Backups (#4023) 3 years ago
.env.production.sample Add Rake task for generate VAPID key (#4195) 3 years ago
.env.test Add recovery code support for two-factor auth (#1773) 3 years ago
.env.vagrant Add a default to .env.vagrant 3 years ago
.eslintignore Dev Tooling fixes (eslint/editorconfig) (#1398) 3 years ago
.eslintrc.yml Improve accessibility (part 4) (#4408) 2 years ago
.foreman Replace sprockets/browserify with Webpack (#2617) 3 years ago
.gitattributes Add .gitattributes file to avoid unwanted CRLF (#3954) 3 years ago
.gitignore fix #4356 : place sw.js to assets/sw.js (#4357) 2 years ago
.haml-lint.yml Added haml-lint and fix warnings (#2773) 3 years ago
.nanoignore Remove Storybook (#4397) 2 years ago
.nvmrc update Node to 6.x LTS (#1228) 3 years ago
.postcssrc.yml Add object-fit polyfill for Edge (#4182) 3 years ago
.profile Add ffmpeg and dependent packages as well as LD_LIBRARY_PATHs (#3276) 3 years ago
.rspec Adding a Mention model, test stubs 4 years ago
.rubocop.yml Change RuboCop rules to loose (#4464) 2 years ago
.ruby-version Version bumps for ruby and misc gems (#1159) 3 years ago
.scss-lint.yml Enable CodeClimate SCSS Lint checks (#2886) 3 years ago
.slugignore Remove Storybook (#4397) 2 years ago
.travis.yml Use charlock_holmes instead of nkf at FetchLinkCardService (#4080) 3 years ago
Aptfile Add libidn11 to Aptfile (#4475) 2 years ago README tidy up (#2026) 3 years ago
Capfile remove capistrano/faster_assets from Capfile (#2737) 3 years ago
Dockerfile Download npm and yarn from Alpine packages repository (#4242) 3 years ago
Gemfile Update Goldfinger gem to 2.0 (#4286) 3 years ago
Gemfile.lock Run `bundle` (regression from #4284) (#4290) 3 years ago Adds note for instance admins. (#1925) 3 years ago
LICENSE Fix #49 - License changed from GPL-2.0 to AGPL-3.0 3 years ago
Procfile More robust PuSH subscription refreshes (#2799) 3 years ago Fix sidekiq "port" being wrong (#3014) 3 years ago s/PubSubHubbub/WebSub/g (#4372) 3 years ago
Rakefile Initial commit 4 years ago
Vagrantfile Install libidn11-dev in Vagrant (#4238) 3 years ago
app.json Change logo URL for Heroku and Scalingo (#4476) 2 years ago
boxfile.yml [nanobox] Minor tweaks for 1.5 (#4395) 2 years ago Fix rubocop issues, introduce usage of frozen literal to improve performance 3 years ago
docker-compose.yml Switch docker-compose to version 3. (#2747) 3 years ago Some Dockerfile improvements (#3182) 3 years ago
package.json fix(mocha): Run all tests (#4433) 2 years ago
scalingo.json Change logo URL for Heroku and Scalingo (#4476) 2 years ago
yarn.lock Update webpack and related dependencies (without extract-text-webpack-plugin) (#4410) 2 years ago


Build Status Code Climate

Mastodon is a free, open-source social network server. A decentralized solution to commercial platforms, it avoids the risks of a single company monopolizing your communication. Anyone can run Mastodon and participate in the social network seamlessly.

An alternative implementation of the GNU social project. Based on ActivityStreams, Webfinger, WebSub and Salmon.

Click on the screenshot to watch a demo of the UI:


The project focus is a clean REST API and a good user interface. Ruby on Rails is used for the back-end, while React.js and Redux are used for the dynamic front-end. A static front-end for public resources (profiles and statuses) is also provided.

If you would like, you can support the development of this project on Patreon. Alternatively, you can donate to this BTC address: 17j2g7vpgHhLuXhN4bueZFCvdxxieyRVWd



  • Fully interoperable with GNU social and any OStatus platform Whatever implements Atom feeds, ActivityStreams, Salmon, WebSub and Webfinger is part of the network
  • Real-time timeline updates See the updates of people you're following appear in real-time in the UI via WebSockets
  • Federated thread resolving If someone you follow replies to a user unknown to the server, the server fetches the full thread so you can view it without leaving the UI
  • Media attachments like images and WebM Upload and view images and WebM videos attached to the updates
  • OAuth2 and a straightforward REST API Mastodon acts as an OAuth2 provider so 3rd party apps can use the API, which is RESTful and simple
  • Background processing for long-running tasks Mastodon tries to be as fast and responsive as possible, so all long-running tasks that can be delegated to background processing, are
  • Deployable via Docker You don't need to mess with dependencies and configuration if you want to try Mastodon, if you have Docker and Docker Compose the deployment is extremely easy


Please follow the development guide from the documentation repository.


There are guides in the documentation repository for deploying on various platforms.


You can open issues for bugs you've found or features you think are missing. You can also submit pull requests to this repository. Here are the guidelines for code contributions

IRC channel: #mastodon on

Extra credits

  • The Emoji One pack has been used for the emojis
  • The error page image courtesy of Dopatwo

Mastodon error image