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.
Maintained, but at a slower pace than the leaders in its category.
Commit activity more than 40% of tracked projects; popularity more than 71%. How this is calculated.
Commits, last 11 months
| Stars | 6.2k |
|---|---|
| Latest release | v0.24.0-unstable012 · 19 Sept 2026 |
| Repo updated | 30 Aug 2026 |
| Licence | Apache-2.0Commons-Clause |
| Built with | Docker, Go |
Is Cosmos actively maintained?
Over the last 11 months the project absorbed 171 commits, of which 47 arrived in the most recent quarter — roughly 16 commits a month.
The most recent tagged release, v0.24.0-unstable012, shipped within the last month — a current, installable version exists today.
Of the 28 projects we track in Self-hosting Solutions, Cosmos ranks #4 by health score — in the top quarter of its category.
What Cosmos actually does
Cosmos is an application gateway and server management tool designed to run containerised services with integrated privacy controls. Written in Go and built around Docker, it functions as a protective entry point while helping administrators oversee their hosting environment. It provides structural organisation for self-hosted infrastructure without requiring complex manual networking setups.
Best fit: Self-hosters looking for an all-in-one control panel to manage Docker containers and secure inbound traffic through a unified gateway.
Worth knowing: The licensing combines Apache-2.0 with a Commons-Clause restriction, which may limit commercial usage or redistribution depending on your interpretation. It also has a moderate development momentum, meaning you should evaluate its long-term stability for critical workloads.
Deployment notes
Because it relies on Docker and Go, you will typically need to mount persistent volumes for configuration data and ensure your host machine has proper port mapping for its gateway functionality.
Links
Cosmos as a replacement for
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Projects in the same categories, ordered by health score.
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