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kodai 5966d1b5a3 fix vagrant connection error (#12180) 1 year ago
.circleci Add missing locale file for ga and add rake task to check for it (#11813) 1 year ago
.dependabot Change dependabot update schedule from live to weekly (#10949) 1 year ago
.github Add sponsor button to GitHub web UI (#10814) 2 years ago
app Fix batch actions being hidden from mobile view (#12183) 1 year ago
bin Bump webpacker from 3.5.5 to 4.0.2 (#10277) 2 years ago
config change string from Disable to Disable login (#12201) 1 year ago
db Fix old migration trying to use new column due to default status scope (#12095) 1 year ago
dist Add TLS v1.3 support (#11603) 1 year ago
lib Fix preloaded JSON-LD context for identity not being used (#12138) 1 year ago
log Initial commit 5 years ago
nanobox Resync Nanobox files with the 2.9.0 release (#11083) 1 year ago
public Add OCR tool to media editing modal (#11566) 1 year ago
spec Add noopener and/or noreferrer (#12202) 1 year ago
streaming Add whitelist mode (#11291) 1 year ago
vendor Increase files checked by ESLint (#9705) 2 years ago
.buildpacks Add ffmpeg buildpack for scalingo (#8500) 2 years ago
.codeclimate.yml Replace from scss-lint to sass-lint (#10958) 1 year ago
.dockerignore Add .bundle to .dockerignore (#7895) 2 years ago
.editorconfig Add final newline to locale files (#2890) 4 years ago
.env.nanobox Various updates for Nanobox deploys (#11988) 1 year ago
.env.production.sample Remove quotes in `LDAP_SEARCH_FILTER` example (#12019) 1 year ago
.env.test Do not test PAM authentication by default (#9027) 2 years ago
.env.vagrant fix vagrant connection error (#12180) 1 year ago
.eslintignore Increase files checked by ESLint (#9705) 2 years ago
.eslintrc.js Refactor icons in web UI to use Icon component (#9951) 2 years ago
.foreman Replace sprockets/browserify with Webpack (#2617) 4 years ago
.gitattributes Add .gitattributes file to avoid unwanted CRLF (#3954) 3 years ago
.gitignore Ignore elasticsearch directory (#7070) 3 years ago
.haml-lint.yml Added haml-lint and fix warnings (#2773) 4 years ago
.nanoignore Remove Storybook (#4397) 3 years ago
.nvmrc Upgrade Node.js to v8.x on nvmrc (#8023) 2 years ago
.profile Add ffmpeg and dependent packages as well as LD_LIBRARY_PATHs (#3276) 4 years ago
.rspec Adding a Mention model, test stubs 5 years ago
.rubocop.yml require rubocop-rails in .rubocop.yml (#10974) 1 year ago
.ruby-version Use Ruby 2.6.5 (#12049) 1 year ago
.sass-lint.yml Fix sass-lint config (#10982) 1 year ago
.slugignore Remove Storybook (#4397) 3 years ago
.yarnclean Replace from scss-lint to sass-lint (#10958) 1 year ago Update (#12096) 1 year ago
Aptfile Adjust Aptfile for Heroku-18 stack (#8588) 2 years ago Update changelog for 3.0.1 (#12139) 1 year ago Add code of conduct from GitHub generator (#5674) 3 years ago Update translating platform has changed to crowdin ( (#11094) 1 year ago
Capfile remove capistrano/faster_assets from Capfile (#2737) 4 years ago
Dockerfile Update nodejs in Dockerfile (#12052) 1 year ago
Gemfile Bump rubocop from 0.74.0 to 0.75.1 (#12191) 1 year ago
Gemfile.lock [Security] Bump loofah from 2.2.3 to 2.3.1 (#12203) 1 year ago
LICENSE Fix #49 - License changed from GPL-2.0 to AGPL-3.0 4 years ago
Procfile Bind servers to in Procfile (#11378) 1 year ago Fix Procfile on OS X (#6748) 3 years ago Fix spelling error in README (#12086) 1 year ago
Rakefile Initial commit 5 years ago
Vagrantfile Add clearer error when/if gpg fails to install (#10228) 2 years ago
app.json Remove deprecated config from Heroku and Scalingo (#11925) 1 year ago
babel.config.js Fix tesseract.js being part of the common chunk (#11571) 1 year ago
boxfile.yml Various updates for Nanobox deploys (#11988) 1 year ago Fix rubocop issues, introduce usage of frozen literal to improve performance 4 years ago
crowdin.yml Update Crowdin configuration file 1 year ago
docker-compose.yml Add healthcheck endpoint for web (#11770) 1 year ago
package.json Bump react-dom from 16.8.6 to 16.10.2 (#12107) 1 year ago
postcss.config.js Increase files checked by ESLint (#9705) 2 years ago
priv-config TOR federation (#7875) 2 years ago
scalingo.json Remove deprecated config from Heroku and Scalingo (#11925) 1 year ago
yarn.lock Bump react-dom from 16.8.6 to 16.10.2 (#12107) 1 year ago


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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 (C) 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