Flarum vs Lemmy
Self-host pick — both replace Reddit (Threaded community / forum).
Both Flarum and Lemmy self-host as a replacement for Reddit (Threaded community / forum). Pick Flarum if you want the lighter footprint — 20min docker-compose (PHP + MySQL/MariaDB), $5/mo vps; php-fpm stack is light. Pick Lemmy if you need communities that want a Reddit-shaped federated home and value the upvote/downvote ranking model — 30min docker-compose (Rust backend + Postgres + UI + pict-rs for images) and $5-10/mo vps for a small instance; storage scales with image uploads.
| Flarumopen-source | Lemmyopen-source | |
|---|---|---|
| License | MIT | AGPL-3.0 |
| Setup time | 20min docker-compose (PHP + MySQL/MariaDB) | 30min docker-compose (Rust backend + Postgres + UI + pict-rs for images) |
| Monthly cost | $5/mo VPS; PHP-FPM stack is light. | $5-10/mo VPS for a small instance; storage scales with image uploads. |
| GitHub | flarum/framework | LemmyNet/lemmy |
| Replaces | Reddit + 1 other |
Good fit for
Flarum
Smaller communities that want a clean, light forum and aren't married to upvote ranking.
Weak at:No federation; smaller plugin ecosystem than Discourse; needs MySQL/MariaDB.
Lemmy
Communities that want a Reddit-shaped federated home and value the upvote/downvote ranking model.
Weak at:Mobile clients are improving but inconsistent; smaller global reach than Reddit's network effect.
In a terminal? npx -y github:SolvoHQ/os-alt-cli reddit prints Reddit's self-host options including both —
how the CLI works →
FAQ
Which is easier to self-host, Flarum or Lemmy?
Flarum: 20min docker-compose (PHP + MySQL/MariaDB). Lemmy: 30min docker-compose (Rust backend + Postgres + UI + pict-rs for images).
What does each cost to run?
Flarum: $5/mo VPS; PHP-FPM stack is light.. Lemmy: $5-10/mo VPS for a small instance; storage scales with image uploads.. Both projects are free and open source.
Do Flarum and Lemmy replace the same SaaS?
Yes — both are open-source alternatives to Reddit.