Cosmos
Run server applications securely and with built-in privacy features. It acts as a secure gateway to your application, as well as a server manager.
Description from awesome-selfhosted (CC BY-SA 3.0)
Still maintained? Yes: 34 commits in the last 90 days, latest release v0.23.4 (Aug 2026).
Also an alternative to Cloudron Cloud and Heroku.
Read the comparison: Cloudron vs YunoHost vs Cosmos vs Umbrel (2026)
At a glance
Cosmos quick facts
- Health score
- 95/100 GOOD
- Stars
- 6,188
- Last commit
- 9 days ago (Oct 2026)
- Latest release
- v0.23.4, Aug 2026
- Licence
- Apache-2.0, Commons-Clause
Top alternatives to Cosmos
Full rankings: Cloudron Cloud alternatives, Heroku alternatives
In its own words
The project's README opens: "☁️ Cosmos is the most secure and easy way to self-host a Home Server. It acts as a secure gateway to your application, as well as a server manager. It aims to solve the increasingly worrying problem of vulnerable self-hosted applications and personal servers."
Why it ranks here
Health score explained
Cosmos scores 95/100, #2 of 28 in Self-hosting Solutions: 34 commits in the last 90 days earn 35.0 of 35 points, the latest release (v0.23.4, 2 months ago) earns 25.0 of 25, 6,188 stars add 15.2 of 20, an active, unarchived repository keeps 10 and Docker support adds the final 10. That places it in the good band (70 and above). The biggest shortfall is star count, worth 4.8 more points.
Recomputed nightly from the GitHub API. How the score is calculated.
Health over time
- Commit activity 35.0 / 35
34 commits in 90 days (30+ scores full marks)
- Release recency 25.0 / 25
v0.23.4 released 2 months ago
- Stars biggest shortfall 15.2 / 20
6.2k stars on GitHub (logarithmic)
- Not archived 10.0 / 10
Repository is active
- Docker support 10.0 / 10
Docker image or Compose file available
Commit activity
- 34
- Last 90 days
- 158
- Last 12 months
- 9 days ago
- Last push
Ranked #2 of 28 tools in Self-hosting Solutions by health , between Umbrel (#1) and HomeButler (#3) .
Details
| Licence | Apache-2.0, Commons-Clause |
| Platforms | Docker, Go |
| Latest release | v0.23.4 · 2 months ago |
| Stars | 6,188 |
| Open issues | 173 |
| Docker | Yes |
| Repository | azukaar/cosmos-Server ↗ |
Cosmos vs its top 5 alternatives
Active tools that share a comparison page or a category with Cosmos (Self-hosting Solutions), scored on the same five terms.
| Tool | Health | Stars | Licence | Last commit |
|---|---|---|---|---|
| Cosmos (this tool) | 95 | 6.2k | Apache-2.0 | 9 days ago |
| HomeButler | 90 | 313 | MIT | yesterday |
| YunoHost | 84 | 3k | AGPL-3.0 | yesterday |
| Cloudron | 61 | 34 | ⊘ Proprietary | yesterday |
| FreedomBox | 52 | 65 | AGPL-3.0 | 14 days ago |
| LibreServer | 52 | 54 | AGPL-3.0 | 9 days ago |
Cosmos: common questions
What does Cosmos replace?
Repoly lists Cosmos as an open-source alternative to Cloudron Cloud and Heroku. Each comparison page ranks every alternative by the same health score, so you can see where Cosmos stands against the others.
Is Cosmos still maintained?
Cosmos had 34 commits in the last 90 days and its last push was 9 days ago; the latest tagged release, v0.23.4, is from 2 months ago. Repoly recomputes this nightly.
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