Giving social networking back to you

With thousands of interconnected communities to choose from, and the tools to make your own, Mastodon is the world’s largest free, open-source, decentralized microblogging network.

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Find your perfect place

Mastodon is a federated network. Pick an instance that suits you, out of a diverse pool for all sorts of interests, needs, and languages, run by independent people and organizations. Regardless of which one you choose, you can always interact with everyone else.

Built for real conversation

With 500 characters per post, you get plenty of space to go deep into topics, instead of just making surface-level quips. Built-in support for content and spoiler warnings lets you share sensitive discussions and media with only those who want to see them.

You’re a person, not a product

Mastodon is free, open source software. The development is crowdfunded. All instances are independently owned, hosted, and moderated. There is no monopoly by a single commercial company, no ads, no tracking.

Always within reach

With multiple apps available for iOS, Android, and every platform you can think of, Mastodon is easy to use everywhere you go. An easy to use and open API ensures a rich ecosystem of 3rd party apps.

Choose an instance picker

Each instance is a separate, independently owned gateway into the fediverse. You can talk to your friends regardless of which one you choose, but they have different moderation policies and interest groups.

Help me choose

Install your own

If you are interested in running your own instance — for your friends, family or organization — you can get started by reading the installation documentation. You only host your own users and the content that they subscribe to.

Read the docs

How it works

Anyone can run a server of Mastodon. Each server hosts individual user accounts, the content they produce, and the content they subscribe to.

Each user account has a globally unique name (e.g. @[email protected]), consisting of the local username (@user), and the domain name of the server it is on (

Users can follow each other, regardless of where they're hosted — when a local user follows a user from a different server, the server subscribes to that user's updates for the first time.


Why is that cool?

Servers are run independently by different people and organizations. They can apply wildly different moderation policies, so you can find or make one that fits your taste perfectly. A decentralized network is harder for governments to censor. If one server goes bankrupt or starts acting unethically, the network persists so you never have to worry about migrating your friends and audience to a yet another platform again.


Mastodon is free, open-source software. There is no advertising, monetizing, or venture capital. The development is crowdfunded.

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