Overview
Cosmos is a self-hosted server management platform that acts as a secure reverse proxy gateway combined with an app manager. It provides authentication, authorization, OAuth2/SSO, and automatic HTTPS for all proxied apps via a unified web UI. Apps can be deployed from a marketplace as Docker containers, with Cosmos handling networking and certificate provisioning automatically. Designed to be the single entry point and control plane for a personal or small-team server.
Where it falls short of Heroku
- No Git-based or CI/CD deployment pipeline for custom code
- App marketplace is smaller and less mature than CasaOS or Umbrel
- Multi-server and horizontal scaling are not supported
- Documentation and community support are limited compared to more established platforms
We list the gaps honestly so you can decide if the trade-off is worth owning your data.
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[](https://openreplace.com/cosmos-server)Similar open-source projects
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