OpenRun runs on a single machine, with either Docker or Podman. All apps runs on that one machine. Idle apps are scaled down to zero, so resource usage is low even when hundreds of apps are installed. For scaling up, OpenRun can be deployed on Kubernetes. Each app deployed through OpenRun gets created as a Kubernetes deployment, again with scaling down to zero. Same declarative config moves from singe node to Kubernetes, no changes required.

I don't have any telemetry, so not sure about number of users. Based on issues filed, lots of users using the single node deployment (which is good enough for most use cases). Started with Streamlit/Gradio type apps, now users are actually using it for deploying vibe coded internal tools. See https://github.com/openrundev/openrun/issues?q=is%3Aissue%20...