Kellnr

Spec sheet

Purpose

Kellnr is a private Rust crate registry for managing an organization’s Rust dependencies on its own infrastructure.Read 11 Oct 2026 · kellnr.io

Deployment

Documented deployment options include Docker, Kubernetes with Helm, bare metal, Cargo, and the Arch User Repository.Read 11 Oct 2026 · kellnr.io

Security

Each release includes a CycloneDX SBOM with dependency license information, cryptographic checksums, and package URLs.Read 11 Oct 2026 · kellnr.io

Support

The contact page directs users to GitHub Issues for bugs, feature requests, or questions and GitHub Discussions for community discussion.Read 11 Oct 2026 · kellnr.io

Founded

2021Read 28 Sep 2026 · kellnr.io

Access control

User roles, groups, API tokens, crate ownership, and optional authentication for crate downloads are supported.Read 11 Oct 2026 · kellnr.io

Automation

Kellnr provides a REST API, interactive API documentation, and webhooks for integrations such as CI/CD pipelines and chat systems.Read 11 Oct 2026 · kellnr.io

Crate hosting

It supports private crate hosting and publishing with standard Cargo commands.Read 11 Oct 2026 · kellnr.io

Crates.io proxy

Its proxy caches crates from crates.io and can work offline once crates are cached.Read 11 Oct 2026 · kellnr.io

Documentation

Kellnr can generate and serve rustdocs for uploaded crates, and supports uploading pre-built rustdocs.Read 11 Oct 2026 · kellnr.io

Identity integrations

OAuth2/OpenID Connect support includes Authentik, Keycloak, Okta, Azure AD, and other OIDC-compliant providers.Read 11 Oct 2026 · kellnr.io

License and commercial offering

Kellnr is available under the MIT license; its maker says the former commercial Professional license ended and there is no longer a commercial version.Read 11 Oct 2026 · kellnr.io

Platform limits

The documentation lists pre-built binaries for Linux, Windows, and Apple Silicon macOS; it says Windows binaries are not tested and are provided on a best-effort basis.Read 11 Oct 2026 · kellnr.io

Storage and databases

Storage options include local filesystem, AWS S3, Google Cloud Storage, MinIO, and S3-compatible services; database options include SQLite and PostgreSQL.Read 11 Oct 2026 · kellnr.io

Toolchain distribution

Kellnr can host private Rust toolchains through a rustup-compatible distribution server, but its toolchain download endpoints do not support authentication.Read 11 Oct 2026 · kellnr.io

Plans and prices

Every Kellnr plan and price →

Where Specifiction places it

• Artifact repository software#29 of 648.0