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kodai 5966d1b5a3 fix vagrant connection error (#12180) 4 years ago
.circleci Add missing locale file for ga and add rake task to check for it (#11813) 5 years ago
.dependabot Change dependabot update schedule from live to weekly (#10949) 5 years ago
.github Add sponsor button to GitHub web UI (#10814) 5 years ago
app Fix batch actions being hidden from mobile view (#12183) 4 years ago
bin Bump webpacker from 3.5.5 to 4.0.2 (#10277) 5 years ago
config change string from Disable to Disable login (#12201) 4 years ago
db Fix old migration trying to use new column due to default status scope (#12095) 4 years ago
dist Add TLS v1.3 support (#11603) 5 years ago
lib Fix preloaded JSON-LD context for identity not being used (#12138) 4 years ago
log Initial commit 8 years ago
nanobox Resync Nanobox files with the 2.9.0 release (#11083) 5 years ago
public Add OCR tool to media editing modal (#11566) 5 years ago
spec Add noopener and/or noreferrer (#12202) 4 years ago
streaming Add whitelist mode (#11291) 5 years ago
.codeclimate.yml Replace from scss-lint to sass-lint (#10958) 5 years ago
.env.nanobox Various updates for Nanobox deploys (#11988) 4 years ago
.env.production.sample Remove quotes in `LDAP_SEARCH_FILTER` example (#12019) 4 years ago
.env.vagrant fix vagrant connection error (#12180) 4 years ago
.eslintrc.js Refactor icons in web UI to use Icon component (#9951) 5 years ago
.rubocop.yml require rubocop-rails in .rubocop.yml (#10974) 5 years ago
.ruby-version Use Ruby 2.6.5 (#12049) 4 years ago
.sass-lint.yml Fix sass-lint config (#10982) 5 years ago
.yarnclean Replace from scss-lint to sass-lint (#10958) 5 years ago Update (#12096) 4 years ago
Aptfile Update changelog for 3.0.1 (#12139) 4 years ago Update translating platform has changed to crowdin ( (#11094) 5 years ago
Dockerfile Update nodejs in Dockerfile (#12052) 4 years ago
Gemfile Bump rubocop from 0.74.0 to 0.75.1 (#12191) 4 years ago
Gemfile.lock [Security] Bump loofah from 2.2.3 to 2.3.1 (#12203) 4 years ago
Procfile Bind servers to in Procfile (#11378) 5 years ago Fix spelling error in README (#12086) 4 years ago
Vagrantfile Add clearer error when/if gpg fails to install (#10228) 5 years ago
app.json Remove deprecated config from Heroku and Scalingo (#11925) 5 years ago
babel.config.js Fix tesseract.js being part of the common chunk (#11571) 5 years ago
boxfile.yml Various updates for Nanobox deploys (#11988) 4 years ago
crowdin.yml Update Crowdin configuration file 5 years ago
docker-compose.yml Add healthcheck endpoint for web (#11770) 5 years ago
package.json Bump react-dom from 16.8.6 to 16.10.2 (#12107) 4 years ago
scalingo.json Remove deprecated config from Heroku and Scalingo (#11925) 5 years ago
yarn.lock Bump react-dom from 16.8.6 to 16.10.2 (#12107) 4 years 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