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Verdaccio
Private npm packages without shipping code to the public registry or paying for npm Enterprise: Verdaccio is the standard lightweight, zero-config private registry and caching proxy. It runs as a single Node.js process with its own tiny embedded database; no external database is required to start. Point npm, yarn, or pnpm at it and everything behaves as expected: install, publish, unpublish, dist-tags, and deprecation all work against the standard npm endpoints. The uplink system is where it earns its keep: packages not found locally are fetched from configured upstreams (npmjs.org, yarn, JFrog, Nexus, or another Verdaccio), cached as tarballs, and served locally thereafter - cutting CI latency and surviving registry outages. Multiple uplinks chain for failover, and per-package glob patterns in config.yaml route scopes to specific upstreams while controlling access, publish, and unpublish rights per group. You can even override a public package by publishing a patched version under the same name locally. A plugin architecture swaps in auth backends (htpasswd default, LDAP and others available), storage drivers (S3, Google Cloud Storage), middleware routes, and metadata filters. With official Docker images and a Kubernetes Helm chart, it slots into any pipeline in minutes.
Benefits
- Private Code Stays Private
- Publish internal packages with the full npm workflow - no public exposure, no per-user registry fees.
- Faster, More Resilient CI
- Cached tarballs serve repeat installs locally, cutting latency and keeping builds green through npmjs.org outages.
- One Endpoint, Many Registries
- Uplink chaining merges npmjs, corporate Nexus/JFrog, and other sources behind a single registry URL.
- Patch Without Forking Workflows
- Publish a fixed version of any third-party package under the same name and every project picks it up transparently.
Features
- Zero-Config Start
- Embedded database and sane defaults - a working registry from a single process.
- Full npm Client Support
- Install, publish, unpublish, dist-tag, and deprecate via npm, yarn, and pnpm.
- Uplink Proxying and Cache
- Fetch-through caching from npmjs and other registries with timeouts, auth tokens, and failover.
- Per-Package Access Control
- Glob-pattern rules govern access, publish, unpublish, and proxy routing per scope.
- Plugin Architecture
- Swap auth (htpasswd, LDAP), storage (S3, GCS), middleware, and filters via config.yaml.
- Docker and Helm
- Official container image and Kubernetes chart for pipeline-ready deployment.