Dev tools · September 11, 2024
Clace – Application Server with support for scaling down to zero
I have been building the open source project https://github.com/claceio/clace. Clace is an application server that builds and deploys containers, allowing it to manage webapps in any language/framework. Compared to application servers like Nginx Unit, Clace has the advantage of being able to work with any application, without requiring any dependency or packaging changes. Clace provides a blue-green staged deployment model for apps. Not just code changes, even configuration changes are staged and can be verified before being made live. Clace is not a PaaS solution,…
In plain words
Clace is an open-source application server that builds and deploys containers to manage web applications written in any language or framework. It supports blue-green staged deployments where code and configuration changes can be verified before going live. Unlike similar tools, Clace requires no dependency or packaging changes to applications. It includes a built-in reverse proxy and can scale down to zero, but focuses solely on application deployment rather than managing databases or auxiliary services.
written from the facts on this page · September 2026
From the sources
In the maker’s words, at launch
I have been building the open source project https://github.com/claceio/clace. Clace is an application server that builds and deploys containers, allowing it to manage webapps in any language/framework. Compared to application servers like Nginx Unit, Clace has the advantage of being able to work with any application, without requiring any dependency or packaging changes. Clace provides a blue-green staged deployment model for apps. Not just code changes, even configuration changes are staged and can be verified before being made live. Clace is not a PaaS solution, it does not support deploying databases and other auxiliary services. It does share the fact that it manages containers with PaaS solutions. Clace is different in that it builds its own reverse proxy, instead of depending on Traefik/Nginx. This allows Clace to implement features like shutting down idle apps and adding app level OAuth authentication. Clace runs natively on Windows/OSX in addition to Linux. Clace works with Docker/Podman/Orbstack. Clace allows you to run hundreds of apps on a single machine. Since app containers are shut down when not in use, there is no CPU/memory resource usage when the apps are idle. It provides a Google Cloud Run type interface on your own hardware. https://clace.io/ has a demo video and docs. Do let me know any feedback.
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