OpenChoreo gives developers a complete open-source internal developer platform for Kubernetes: a self-service portal to build, deploy, and run applications without wrestling raw cluster YAML. In the portal you create a component from source code or a container image, expose it through endpoints, and promote it across environments with a few clicks. Platform engineers define the golden paths behind that simplicity: component types, traits, and workflows set the rules for how workloads are built, secured, and connected. The control plane translates each declaration into the Kubernetes resources it needs, then keeps the portal in sync with what is actually running. Built-in CI builds from source with Buildpacks and Argo Workflows, and GitOps delivery keeps every environment reconciled with the declared state. Metrics, logs, and traces surface in the same portal, organized by component and environment instead of pod names and namespaces. Role-based access control, project isolation, and traffic policies draw the boundaries between teams, and platform analytics show how the platform itself is being used. Existing Backstage portals can adopt OpenChoreo as plugins, and developers can also work through the CLI, GitOps files, or AI agents. Running on a dedicated VPS on RepoCloud with guaranteed CPU, RAM, and SSD, full root SSH access, and a browser serial console. Apache-2.0 licensed.