Decentralized Social Media

Decentralized social media are social networking services built so that no single company owns users' accounts, posts and follower lists or controls every decision about what may be published. Instead of one central platform, they rely on open protocols that many independent servers or applications can use, on federations of servers that talk to each other, or on blockchains that record identities and social connections. Users can, in principle, move between apps without losing their audience.

The movement grew from frustration with large platforms over account bans, opaque algorithms, data harvesting and the risk of losing years of content when a service changes its rules or closes. It spans both crypto and non-crypto projects: some use tokens and wallets, others use ordinary web technology with no blockchain at all. The crypto-based versions are often grouped under Web3, while the federated versions are often called the "fediverse". Both share a goal of separating the social network itself from the apps people use to view it.

Email is a useful comparison. Someone with an address at one provider can write to someone at a completely different provider, and either of them can switch providers and take their contacts along. No single company owns email. Decentralized social media try to make posting, following and messaging work the same way, so that a person's profile and followers belong to them rather than to one app.

In practice this means the person picks an app they like, and the app connects to a shared network that other apps also use. If the app becomes unpleasant or shuts down, the person moves to another and keeps their followers. The catch is that keeping a shared network healthy, fast and free of spam is harder without a single company in charge.

• Federated networks. Independent servers run compatible software and exchange posts. Mastodon, launched in 2016, uses the ActivityPub standard published by the World Wide Web Consortium in 2018. Each server sets its own rules, and users can follow people on other servers.
• Open protocols with portable identity. The AT Protocol behind Bluesky, which opened to the public in February 2024, separates hosting, feeds and moderation into services that different providers can run, and lets users move their accounts between hosts. Its crypto-related aspects are covered under Bluesky crypto protocol.
• Relay-based networks. Nostr, which emerged in 2020, has users sign posts with their own keys and publish them to simple relay servers. Identity is a public key, and anyone who loses the matching private key loses the account. Nostr is popular among Bitcoin users, partly because it supports small payments over the Lightning Network.
• Blockchain-based networks. Projects such as Farcaster and Lens record identities or social graphs on blockchains, letting users own their handles and connections much as they own a token. Farcaster keeps its identity registry on Optimism while storing posts off-chain.

Crypto-based social networks often treat profiles as wallet addresses, use naming services such as the Ethereum Name Service for handles and allow users to tip, subscribe or buy access with tokens. Supporters see this as a way to strengthen the creator economy, letting writers and artists earn directly from audiences without platform intermediaries. Some apps let users post non-fungible tokens or mint posts as collectibles. Identity standards such as the decentralized identifier offer another route to portable accounts. Several speculative "social tokens" and apps that let users trade shares in people's profiles boomed briefly in 2023 and then faded, illustrating how financial incentives can overshadow social use.

Moderation is the central design problem. Federated servers moderate their own users and can block other servers, which spreads responsibility but leads to uneven rules. Bluesky allows independent labelling and moderation services that users can subscribe to. Relay and blockchain networks make content harder to remove, which supporters describe as censorship resistance but critics worry can shelter harassment, scams and illegal material. Laws such as the European Union's Digital Services Act still apply to the companies that run apps and servers, so legal duties tend to fall on the visible operators rather than on the protocol.

Decentralized social networks remain small compared with the largest centralized platforms as of November 2026. They can be harder to join, and features such as search, recommendations and spam filtering are more difficult when data is spread across many operators. Users who control their own keys bear the risk of losing them. Many projects still depend heavily on a founding company or a few large servers, so the degree of real decentralization varies, and long-term funding without advertising or token sales is an open question.