kbin vs Lemmy
A side-by-side comparison of two self-hosted social networks options — licensing, setup difficulty, resource needs, and what each one replaces.
| Feature | kbin | Lemmy |
|---|---|---|
| Deploy effort | Under-an-hour setup | Under-an-hour setup |
| Category | Social Networks | Social Networks |
| License | AGPL-3.0 | AGPL-3.0 |
| Language | PHP | Rust |
| Setup difficulty | Hard | Medium |
| Min. RAM | 1,024 MB | 512 MB |
| Deployment | docker, bare-metal, source | docker, bare-metal, source |
| GitHub stars | ★ 600 | ★ 14,607 |
| First released | 2020 | 2019 |
| Replaces |
What are kbin and Lemmy?
kbin
kbin is a free, open-source, federated content aggregator and microblogging platform. It combines Reddit-style threads with microblogging, all federating through ActivityPub.
- Threaded content aggregation
- Integrated microblogging
- ActivityPub federation
- Magazine-based communities
Lemmy
Lemmy is a free, open-source, federated link aggregator and discussion platform. It is a fediverse alternative to Reddit, with communities that federate across instances via ActivityPub.
- Federated communities
- Threaded discussions and voting
- ActivityPub support
- Fast Rust backend
kbin vs Lemmy: key differences
Kbin is written in PHP, while Lemmy is built with Rust. Lemmy is the lighter option, starting around 512 MB of RAM against 1,024 MB for kbin. Lemmy has the considerably larger community, at 14,607 GitHub stars versus 600.
Why pick each one
Choose kbin if…
- Combines forum and microblog
- Federates widely
Watch out for
- Complex Symfony deployment
- Development pace varies
Choose Lemmy if…
- Reddit-like experience
- Efficient resource use
Watch out for
- Moderation tooling still maturing
- Fragmented across instances
Frequently asked questions
Is kbin or Lemmy better?
Lemmy is the stronger all-round pick: it has both the larger community and the simpler medium setup. Consider kbin if its specific feature set fits your needs better.
Are kbin and Lemmy free and open-source?
Yes. kbin is licensed under AGPL-3.0 and Lemmy under AGPL-3.0. Both can be self-hosted at no software cost.
Can I run kbin and Lemmy with Docker?
kbin: yes. Lemmy: yes.
Which is lighter on resources, kbin or Lemmy?
Lemmy has the smaller minimum footprint at 512 MB of RAM, compared to about 1,024 MB for kbin. Real-world usage depends on library size, user count, and enabled features.