Your self-hosted, globally interconnected microblogging community
Ruby JavaScript CSS HTML Other
Clone or download
Pull request Compare This branch is 37 commits ahead, 99 commits behind tootsuite:master.
Fetching latest commit…
Cannot retrieve the latest commit at this time.
Failed to load latest commit information.
.circleci Restore support to ruby 2.3, add ruby 2.3 to circle ci (#7935) Jul 3, 2018
.github Multiple Issue templates (#7402) May 8, 2018
app Merge branch 'theme_light' into cybrespace Jul 21, 2018
bin Add symbolic link for yarnpkg (#7894) Jun 26, 2018
config Grab the updated en.yml which was out of date for some reason Jul 21, 2018
db Feature: sublocale of english for the cybrespace customizations that … Jul 21, 2018
docs Fix redirect link on (#1595) Apr 12, 2017
lib Merge branches 'branding_cybre', 'dependency_whatinput', 'feature_512… Jul 21, 2018
log Initial commit Feb 20, 2016
nanobox [Nanobox] Tuning Update (#6660) Mar 6, 2018
public Cybrespace branding Jul 21, 2018
spec Feature: increase bio length to 413 characters Jul 21, 2018
streaming Add media timeline (#6631) May 21, 2018
vendor/assets Initial commit Feb 20, 2016
.babelrc Remove debug option from Babel preset env (#6852) Mar 21, 2018
.buildpacks Add heroku APT buildpack for scalingo. (#3051) May 14, 2017
.codeclimate.yml fix RuboCop error (#7442) Jun 4, 2018
.dockerignore Add .bundle to .dockerignore (#7895) Jun 26, 2018
.editorconfig Add final newline to locale files (#2890) May 7, 2017
.env.nanobox [Nanobox] Enable ElasticSearch support by default (#6977) Mar 31, 2018
.env.production.sample Merge `HIDDEN_SERVICE_VIA_TRANSPARENT_PROXY` into `ALLOW_ACCESS_TO_HI… Jun 29, 2018
.env.test Add parallel test processors (#7215) Apr 21, 2018
.env.vagrant Add a default to .env.vagrant Jan 26, 2017
.eslintignore Dev Tooling fixes (eslint/editorconfig) (#1398) Apr 10, 2017
.eslintrc.yml Update ESLint for Code Climate (#7696) Jun 1, 2018
.foreman Replace sprockets/browserify with Webpack (#2617) May 3, 2017
.gitattributes Add .gitattributes file to avoid unwanted CRLF (#3954) Jun 26, 2017
.gitignore Ignore elasticsearch directory (#7070) Apr 8, 2018
.haml-lint.yml Added haml-lint and fix warnings (#2773) May 8, 2017
.nanoignore Remove Storybook (#4397) Jul 27, 2017
.nvmrc update Node to 6.x LTS (#1228) Apr 15, 2017
.postcssrc.yml Add object-fit polyfill for Edge (#4182) Jul 13, 2017
.profile Add ffmpeg and dependent packages as well as LD_LIBRARY_PATHs (#3276) May 24, 2017
.rspec Adding a Mention model, test stubs Feb 24, 2016
.rubocop.yml fix RuboCop error (#7442) Jun 4, 2018
.ruby-version Update Ruby to version 2.4.4 (#6964) Apr 1, 2018
.scss-lint.yml Enable CodeClimate SCSS Lint checks (#2886) May 7, 2017
.slugignore Remove Storybook (#4397) Jul 27, 2017
.yarnclean Reduce container size with clean yarn (#3506) Sep 30, 2017 docs: Add AUTHORS file (#6685) Mar 9, 2018
Aptfile Specify libicu explicitly in Aptfile (#4920) Sep 13, 2017 Add code of conduct from GitHub generator (#5674) Nov 13, 2017 Improve “how to translate” (#7358) May 4, 2018
Capfile remove capistrano/faster_assets from Capfile (#2737) May 3, 2017
Dockerfile Add symbolic link for yarnpkg (#7894) Jun 26, 2018
Gemfile Remove rack-timeout (#7809) Jun 15, 2018
Gemfile.lock Update sprockets gem (#7858) Jun 20, 2018
LICENSE Fix #49 - License changed from GPL-2.0 to AGPL-3.0 Sep 21, 2016
Procfile More robust PuSH subscription refreshes (#2799) May 5, 2017 Fix Procfile on OS X (#6748) Mar 12, 2018 Remove reference to BTC, update video link Jul 5, 2018
Rakefile Initial commit Feb 20, 2016
Vagrantfile Upgrade Vagrant box to Xenial (#6421) Feb 4, 2018
app.json Change logo URL for Heroku and Scalingo (#4476) Aug 1, 2017
boxfile.yml [Nanobox] Enable ElasticSearch support by default (#6977) Mar 31, 2018 Fix rubocop issues, introduce usage of frozen literal to improve perf… Nov 15, 2016
docker-compose.yml Merge `HIDDEN_SERVICE_VIA_TRANSPARENT_PROXY` into `ALLOW_ACCESS_TO_HI… Jun 29, 2018
jest.config.js Enable coverage for Jest (#5442) Oct 18, 2017
package.json Merge branches 'branding_cybre', 'dependency_whatinput', 'feature_512… Jul 21, 2018
priv-config TOR federation (#7875) Jun 26, 2018
scalingo.json Fix Unknown addon provider in scalingo.json (#7928) Jul 3, 2018
yarn.lock Merge branches 'branding_cybre', 'dependency_whatinput', 'feature_512… Jul 21, 2018


Build Status Code Climate

Mastodon is a free, open-source social network server based on open web protocols like ActivityPub and OStatus. The social focus of the project is a viable decentralized alternative to commercial social media silos that returns the control of the content distribution channels to the people. The technical focus of the project is a good user interface, a clean REST API for 3rd party apps and robust anti-abuse tools.

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


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 or Liberapay.



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

It doesn't have to be Mastodon, whatever implements ActivityPub or OStatus is part of the social network!

Real-time 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!

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 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!

OAuth2 and a straightforward REST API

Mastodon acts as an OAuth2 provider so 3rd party apps can use the API

Fast response times

Mastodon tries to be as fast and responsive as possible, so all long-running tasks are delegated to background processing

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


Copyright (C) 2016-2018 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

Extra credits

The elephant friend illustrations are created by Dopatwo