Cachix vs Omni Line Multipurpose Artifact Registry

Cachix hosts Nix binary caches so teams can share binaries across CI, development, and deployment environments. Its CLI can push binaries, watch a Nix store, and configure Nix to use a cache. The service says its optimizations speed up cache roundtrips, while Cloudflare CDN provides performance and unlimited bandwidth on all plans. When a cache reaches its storage limit, least-recently-used entries are removed; Cachix says it sends a warning email at 85% of that limit. Documentation includes CI guides for GitHub Actions, Buildkite, CircleCI, GitLab CI, Hercules CI, Hydra, and Travis CI. Cachix Deploy uses a pull model to deploy continuously to Nix profiles such as NixOS, nix-darwin, and Home Manager. Teams can assign read or write access, revoke tokens, and require a token for private cache reads and writes; cache entries are signed. Enterprise options include on-premise or self-hosted deployment, SSO, SLA, dedicated premium support, custom deployment, and audit logs. Cachix offers a free plan and a 14-day trial. Listed Starter, Standard, and Pro plans have prices available by contacting Cachix.

Omni Line Multipurpose Artifact Registry is a self-hosted registry for software packages and artifacts. It supports npm, Composer, Docker, PyPI, Go, Cargo, Maven, RubyGems, Conan, and generic artifacts, with hosted, proxy, and virtual registry modes. Its Multipurpose registry handles uploads and downloads of deployment packages and binaries. Teams can use familiar ecosystem clients and command-line tools by directing them to an Omni Line URL.

Package scanning checks against the public OSV database; optional controls can block installs of known malware or packages below configured severity floors. The management UI supports OIDC single sign-on, while personal access tokens serve CLI and CI authentication and organization roles scope registry permissions. Deployment options include Docker Compose, Helm, Ansible, and cloud templates for AWS, Azure, and DigitalOcean. Artifacts can reside on a local filesystem or S3-compatible storage, with PostgreSQL metadata on infrastructure the operator runs. Omni Line is proprietary commercial software, not open source. A self-hosted trial includes every feature for 30 days. Pro costs $2,499 a year.