lemmy
A federated link aggregator and forum for the fediverse.
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A self-hostable, decentralized alternative to Reddit with federation.
Core Features
- Self-hosted with Docker & Ansible
- Federation across servers (like email)
- Real-time comment updates
- Cross-posting and similar post search
- Avatars, emoji autocomplete, image uploads
What It Can't Do
- •Federation requires proper domain and HTTPS setup; initial setup needs some technical knowledge; join Matrix group for help.
Use Cases
- Build a community forum free from corporate control
- Internal discussion platform for organizations
- Node in a decentralized social content network
Detailed Introduction
Lemmy is an open-source, self-hostable alternative to Reddit, Lobste.rs, and Hacker News. It allows users to subscribe to forums (called communities), post links and discussions, vote, and comment. Unlike centralized platforms, Lemmy servers federate with each other like email, forming a decentralized network called the Fediverse. Anyone can run their own server with full control over moderation policies, and users on different servers can interact seamlessly. Features include live-updating comment threads, cross-posting, image uploads, emoji autocomplete, notifications, RSS feeds, and full moderation logs. Built with Rust, Actix, and TypeScript, it is performant and supports arm64/Raspberry Pi.
Troubleshooting & FAQ (1)
TroubleshootingHow to fix random CI test failures in Lemmy's CommentView tests?
These intermittent failures are often resolved by rerunning the CI pipeline. Ensure your branch includes the cleanup fixes from PR #6463, which addressed some data leakage issues. If failures persist, check for missing test data cleanup in your changes. For repeated failures, refer to issue #6449 for ongoing investigation.
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Getting Started
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Install the software
Double-click the downloaded installer and follow the prompts
Option 1 (Docker): Install Docker & Docker Compose
Download the official docker-compose.yml and configure domain & DB password
Run docker-compose up -d to start
- Option 1 (Docker): Install Docker & Docker Compose
- Download the official docker-compose.yml and configure domain & DB password
- Run docker-compose up -d to start
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Stop and remove containers with volumes: docker-compose down -v. For full removal, delete the directory and database.
No Extra Dependencies
Ready to use after download. No additional runtime required.
Having issues? Check the FAQ below
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