What does federated actually mean?
The network is many independently run servers that talk to each other, rather than one company's platform — which changes who is in charge of your account.
You join one server, called an instance or a pod, run by a person, a community or an organisation. Your account lives there, that server's admins moderate it, and you can follow and be followed by people on any other server that federates. The experience feels like one network; the ownership is distributed.
The practical consequence is that no single company can change the terms, introduce advertising, sell the network or shut it down. If your instance goes badly, you move to another and keep your followers, which is not a possibility on any centralised platform.
ActivityPub is the protocol that makes this work, and it is what connects Mastodon, Pixelfed, Lemmy, PeerTube and Diaspora into one federation — often called the fediverse.
Which platform replaces which?
Each covers one shape of social media, and together they cover most of it.
Twitter or X: Mastodon, with microblogging, a chronological timeline, no ads and community moderation, run by the German non-profit Mastodon gGmbH under AGPL.
Instagram: Pixelfed, with photo and video sharing, stories, collections and a chronological feed, AGPL-3.0. Reddit: Lemmy, with communities, voting, comments and moderation tools, AGPL-3.0.
Facebook: Diaspora, with posts, hashtags, mentions, photo sharing, Markdown and its distinctive Aspects system for friend groups. YouTube: PeerTube, with decentralised video hosting, live streaming and peer-to-peer delivery, from Framasoft in Lyon.
What do you give up leaving the big platforms?
The audience, and it is more honest to say so directly than to pretend otherwise.
Everyone you know is on the centralised platforms, and the fediverse is much smaller. For a business, a creator or anyone whose reach is the point, that is the binding constraint and no feature compensates for it.
You also give up the algorithm, which is a real trade in both directions. A chronological feed shows what people posted rather than what will hold your attention — calmer, slower and without the outrage escalation, and also without the discovery that surfaces things you did not know you wanted. Several people find the fediverse quiet at first for exactly this reason.
What you gain is proportionate: no advertising, no behavioural profiling, no engagement optimisation, moderation by communities rather than by a policy team at scale, and an account nobody can monetise. Choosing an EU-hosted instance puts your data under GDPR.
How do you choose an instance?
It is the one decision that shapes your experience, and it is worth five minutes rather than the thirty seconds most people give it.
The instance determines who moderates you, which other servers you can see — admins can block instances that host abuse — what the local community is like, and crucially where your data physically sits and under which law. An EU-hosted instance puts you under GDPR; one elsewhere does not.
Look at the instance rules, its size, how long it has run and who funds it. A well-run instance with clear rules and an active admin is worth more than a large one, and a hobby instance that disappears takes your account with it.
Self-hosting is the strongest option and a real commitment: Mastodon, Pixelfed, Lemmy, Diaspora and PeerTube are all self-hostable, which means complete ownership and complete responsibility for backups, moderation, updates and abuse.
What is BeReal doing in this category?
Solving a different problem — not who owns the network, but what social media does to people.
BeReal sends every user a prompt at a random time each day and gives them two minutes to post a photo taken then, using front and back cameras at once. No filters, no follower counts, no editing, and no posting outside the window. The design removes the performance from photo sharing, which is the specific harm Instagram is criticised for rather than the ownership question the fediverse addresses.
RealMojis let people react with photos of their own faces rather than stock emoji, which keeps the same principle. BeReal SAS is French, and its cultural impact was genuine — an anti-Instagram movement that reached tens of millions.
Two honest points: it is a conventional centralised app with no federation, so it does not answer the ownership question at all, and it was acquired by Voodoo, a mobile games company, which brought monetisation to a product whose appeal was its absence. Whether the original design survives commercial pressure is the open question.
