Lemmy
Federated link aggregator and community discussion platform — a decentralized, self-hostable alternative to Reddit.
Open source alternative to:
Lemmy is an open-source, federated link aggregator built on the ActivityPub protocol. It works similarly to Reddit — users subscribe to communities, submit links or text posts, vote and comment — but it is decentralized across many independently-run instances that all talk to each other.
Each Lemmy instance can have its own communities, rules, and moderation policies, but users on any instance can subscribe to communities on other instances and comment across instance boundaries. This makes Lemmy part of the Fediverse — the same network as Mastodon, Pixelfed, and other ActivityPub services.
Lemmy gained massive popularity after Reddit's controversial API changes in 2023, and is now home to millions of users across hundreds of instances. Running your own Lemmy instance gives you full control over your community, data, and moderation. It is the primary open-source alternative for communities looking to move away from Reddit.
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Updated 3/27/2026, 6:00:41 AM
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