---
obj: application
repo: https://github.com/LemmyNet/lemmy
website: https://join-lemmy.org
rev: 2025-05-19
---

# Lemmy
**Lemmy** is an open-source, decentralized, and federated alternative to platforms like Reddit. It allows users to create, share, and discuss content in community-based forums called *communities*. Unlike Reddit, Lemmy is part of the **Fediverse**—a network of interconnected servers (also known as *instances*) that communicate using the **ActivityPub** protocol.