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James Adney b059a98025 use S3 "domain-style" URLs 1 week geleden
.circleci Add missing locale file for ga and add rake task to check for it (#11813) 1 maand geleden
.dependabot Change dependabot update schedule from live to weekly (#10949) 4 maanden geleden
.github Add sponsor button to GitHub web UI (#10814) 4 maanden geleden
app add noindex header to statuses#show 4 dagen geleden
bin Bump webpacker from 3.5.5 to 4.0.2 (#10277) 7 maanden geleden
config use S3 "domain-style" URLs 4 dagen geleden
db Fix old migration trying to use new column due to default status scope (#12095) 1 week geleden
dist Add TLS v1.3 support (#11603) 1 maand geleden
lib Fix preloaded JSON-LD context for identity not being used (#12138) 5 dagen geleden
log Initial commit 3 jaren geleden
nanobox Resync Nanobox files with the 2.9.0 release (#11083) 4 maanden geleden
public Add OCR tool to media editing modal (#11566) 2 maanden geleden
spec feat(cookies): Use the same-site attribute to lax 4 dagen geleden
streaming Add whitelist mode (#11291) 2 maanden geleden
vendor Increase files checked by ESLint (#9705) 9 maanden geleden
.buildpacks Add ffmpeg buildpack for scalingo (#8500) 1 jaar geleden
.codeclimate.yml Replace from scss-lint to sass-lint (#10958) 4 maanden geleden
.dockerignore Add .bundle to .dockerignore (#7895) 1 jaar geleden
.editorconfig Add final newline to locale files (#2890) 2 jaren geleden
.env.nanobox Various updates for Nanobox deploys (#11988) 1 week geleden
.env.production.sample Remove quotes in `LDAP_SEARCH_FILTER` example (#12019) 1 week geleden
.env.test Do not test PAM authentication by default (#9027) 1 jaar geleden
.env.vagrant update vagrant configs (#8706) 1 jaar geleden
.eslintignore Increase files checked by ESLint (#9705) 9 maanden geleden
.eslintrc.js Refactor icons in web UI to use Icon component (#9951) 8 maanden geleden
.foreman Replace sprockets/browserify with Webpack (#2617) 2 jaren geleden
.gitattributes Add .gitattributes file to avoid unwanted CRLF (#3954) 2 jaren geleden
.gitignore Ignore elasticsearch directory (#7070) 1 jaar geleden
.haml-lint.yml Added haml-lint and fix warnings (#2773) 2 jaren geleden
.nanoignore Remove Storybook (#4397) 2 jaren geleden
.nvmrc Upgrade Node.js to v8.x on nvmrc (#8023) 1 jaar geleden
.profile Add ffmpeg and dependent packages as well as LD_LIBRARY_PATHs (#3276) 2 jaren geleden
.rspec Adding a Mention model, test stubs 3 jaren geleden
.rubocop.yml require rubocop-rails in .rubocop.yml (#10974) 4 maanden geleden
.ruby-version Use Ruby 2.6.5 (#12049) 1 week geleden
.sass-lint.yml Fix sass-lint config (#10982) 4 maanden geleden
.slugignore Remove Storybook (#4397) 2 jaren geleden
.yarnclean Replace from scss-lint to sass-lint (#10958) 4 maanden geleden Update (#12096) 1 week geleden
Aptfile Adjust Aptfile for Heroku-18 stack (#8588) 1 jaar geleden Update changelog for 3.0.1 (#12139) 5 dagen geleden Add code of conduct from GitHub generator (#5674) 1 jaar geleden Update translating platform has changed to crowdin ( (#11094) 4 maanden geleden
Capfile remove capistrano/faster_assets from Capfile (#2737) 2 jaren geleden
Dockerfile Update nodejs in Dockerfile (#12052) 1 week geleden
Gemfile Bump faker from 2.4.0 to 2.5.0 (#12010) 1 week geleden
Gemfile.lock Bump capistrano from 3.11.1 to 3.11.2 (#12012) 1 week geleden
LICENSE Fix #49 - License changed from GPL-2.0 to AGPL-3.0 3 jaren geleden
Procfile Bind servers to in Procfile (#11378) 2 maanden geleden Fix Procfile on OS X (#6748) 1 jaar geleden Fix spelling error in README (#12086) 1 week geleden
Rakefile Initial commit 3 jaren geleden
Vagrantfile Add clearer error when/if gpg fails to install (#10228) 7 maanden geleden
app.json Remove deprecated config from Heroku and Scalingo (#11925) 3 weken geleden
babel.config.js Fix tesseract.js being part of the common chunk (#11571) 2 maanden geleden
boxfile.yml Various updates for Nanobox deploys (#11988) 1 week geleden Fix rubocop issues, introduce usage of frozen literal to improve performance 2 jaren geleden
crowdin.yml Update Crowdin configuration file 1 maand geleden
docker-compose.yml Add healthcheck endpoint for web (#11770) 1 maand geleden
package.json Bump tesseract.js from 2.0.0-alpha.15 to 2.0.0-alpha.16 (#12013) 1 week geleden
postcss.config.js Increase files checked by ESLint (#9705) 9 maanden geleden
priv-config TOR federation (#7875) 1 jaar geleden
scalingo.json Remove deprecated config from Heroku and Scalingo (#11925) 3 weken geleden
yarn.lock Bump tesseract.js from 2.0.0-alpha.15 to 2.0.0-alpha.16 (#12013) 1 week geleden


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 choices!


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