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Eugen Rochko b8db386e05 Fix UserTrackingConcern firing on every request, optimize some queries (#5368) 7 years ago
app Fix UserTrackingConcern firing on every request, optimize some queries (#5368) 7 years ago
bin Upgrade Webpacker to version 3.0.1 (#5122) 7 years ago
config l10n: PT-BR translation updated (#5362) 7 years ago
db foreign_key, non-nullable, dependent: destroy in account_moderation_notes (#5294) 7 years ago
docs Fix redirect link on (#1595) 7 years ago
lib Fix #5329 (#5332) 7 years ago
log Initial commit 8 years ago
nanobox [nanobox] Allow Full-size Uploads (#4123) 7 years ago
public Change Android icon padding again to half of previous (#5339) 7 years ago
spec Improve spec of Feed and UserTrackingConcern (#5367) 7 years ago
streaming Fix streaming API double-JSON-encoding status IDs for deletes (#5069) 7 years ago
vendor/assets Initial commit 8 years ago
.babelrc 🎄🔨 Force tree shake emojione (#4202) 7 years ago
.buildpacks Add heroku APT buildpack for scalingo. (#3051) 7 years ago
.codeclimate.yml Enable CodeClimate SCSS Lint checks (#2886) 7 years ago
.dockerignore Remove Storybook (#4397) 7 years ago
.editorconfig Add final newline to locale files (#2890) 7 years ago
.env.nanobox [nanobox] Add Automated Backups (#4023) 7 years ago
.env.production.sample Document REDIS_NAMESPACE (#5038) 7 years ago
.env.test Add recovery code support for two-factor auth (#1773) 7 years ago
.env.vagrant Add a default to .env.vagrant 7 years ago
.eslintignore Dev Tooling fixes (eslint/editorconfig) (#1398) 7 years ago
.eslintrc.yml Remove eslint-disable comments (#4681) 7 years ago
.foreman Replace sprockets/browserify with Webpack (#2617) 7 years ago
.gitattributes Add .gitattributes file to avoid unwanted CRLF (#3954) 7 years ago
.gitignore Fix #5274 - Create symlink from public/500.html to public/assets/500.html (#5288) 7 years ago
.haml-lint.yml Added haml-lint and fix warnings (#2773) 7 years ago
.nanoignore Remove Storybook (#4397) 7 years ago
.nvmrc update Node to 6.x LTS (#1228) 7 years ago
.postcssrc.yml Add object-fit polyfill for Edge (#4182) 7 years ago
.profile Add ffmpeg and dependent packages as well as LD_LIBRARY_PATHs (#3276) 7 years ago
.rspec Adding a Mention model, test stubs 8 years ago
.rubocop.yml Add handling of Linked Data Signatures in payloads (#4687) 7 years ago
.ruby-version Bump ruby version to 2.4.2 (#4958) 7 years ago
.scss-lint.yml Enable CodeClimate SCSS Lint checks (#2886) 7 years ago
.slugignore Remove Storybook (#4397) 7 years ago
.travis.yml Remove ubuntu-toolchain-r-test (#5005) 7 years ago
.yarnclean Reduce container size with clean yarn (#3506) 7 years ago
Aptfile Specify libicu explicitly in Aptfile (#4920) 7 years ago
CODEOWNERS + me for Dutch (#5349) 7 years ago README tidy up (#2026) 7 years ago
Capfile remove capistrano/faster_assets from Capfile (#2737) 7 years ago
Dockerfile Reduce container size with clean yarn (#3506) 7 years ago
Gemfile Add strong_migrations to production dependency (#5234) 7 years ago
Gemfile.lock Replace self-rolled statsd instrumention with localshred/nsa (#5118) 7 years ago Adds note for instance admins. (#1925) 7 years ago
LICENSE Fix #49 - License changed from GPL-2.0 to AGPL-3.0 8 years ago
Procfile More robust PuSH subscription refreshes (#2799) 7 years ago Upgrade Webpacker to version 3.0.1 (#5122) 7 years ago Update outdated README (#5262) 7 years ago
Rakefile Initial commit 8 years ago
Vagrantfile Install libidn11-dev in Vagrant (#4238) 7 years ago
app.json Change logo URL for Heroku and Scalingo (#4476) 7 years ago
boxfile.yml [nanobox] Minor tweaks for 1.5 (#4395) 7 years ago Fix rubocop issues, introduce usage of frozen literal to improve performance 8 years ago
docker-compose.yml Specify middleware versions in docker-compose.yml (#5247) 7 years ago Some Dockerfile improvements (#3182) 7 years ago
package.json Track frequently used emojis in web UI (#5275) 7 years ago
scalingo.json Change logo URL for Heroku and Scalingo (#4476) 7 years ago
yarn.lock Fix #5281 - Fix tooltip/custom emoji/search interaction (#5310) 7 years ago


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. Alternatively, you can donate to this BTC address: 17j2g7vpgHhLuXhN4bueZFCvdxxieyRVWd



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

Extra credits

The elephant friend illustrations are created by Dopatwo