Lemmy

Health v2 · maintenance only

Adoption not part of the score

14634 stars · 969 forks observed · 2026-10-20

What it is AI-extracted, prompt v1, taxonomy v1, 2026-08-29, confidence not recorded

Lemmy is a self-hosted, federated link aggregator and discussion forum for the fediverse, similar to Reddit or Hacker News, built in Rust with an ActivityPub-based backend and an SSR web frontend (lemmy-ui). Instances interoperate over ActivityPub so users across servers can post, vote, and comment together.

Use cases

• self-host a reddit alternative for my community
• run a federated discussion forum on my own server
• join a decentralized link aggregator on the fediverse
• host a community forum that federates with Mastodon
• replace reddit with an open-source platform without ads or tracking
• set up a low-resource discussion server on a Raspberry Pi
• build a third-party client using the Lemmy API

When to choose

• you want a Reddit-like forum you fully control and self-host
• you need federation with other ActivityPub platforms like Mastodon or PeerTube
• you want low resource usage and a Rust backend
• you value transparency, moderation logs, and no advertising or tracking

When to avoid

• you need a simple centralized forum without federation overhead
• you require real-time chat rather than threaded discussions
• you want a managed commercial product with vendor support
• you need heavy media features beyond basic image hosting via pict-rs

Facets

application · maturity active

http-server web-framework api-framework self-hosted search-engine social-media self-hosted web-development backend self-hosted rust fediverse activitypub link-aggregator reddit-alternative forum decentralized federation linux docker web-server

Member repositories

For agents

markdown · JSON · MCP: product_card(name="LemmyNet/lemmy")