Nexspence vs SOW

Nexspence is a self-hosted artifact repository manager positioned as a replacement for other artifact repository managers. It supports 15 formats, including Maven, Docker, npm, PyPI, Go Modules, NuGet, Helm, Cargo, Apt, Yum, Conan, Raw, Conda, and Terraform. Hosted, Proxy, and Group repository types are available across formats, with format-specific exceptions. A one-command migration streams repositories, users, and artifacts from a live Nexus instance and is described as pausable and conflict-safe. Storage can use MinIO, AWS S3, Wasabi, or a local filesystem, with per-repository blob-store assignment. Identity options include OIDC/SSO providers, just-in-time provisioning, and group-to-role mapping. Security controls include LDAP, API tokens, JWT, fine-grained RBAC, and SSRF-protected outbound fetches. OSV.dev scanning covers Maven, npm, PyPI, and Cargo; Docker and OCI scanning requires an operator-supplied Trivy installation. Deployment options include Docker Compose, Helm/Kubernetes, and native packages or archives for Linux, macOS, and Windows. Nexspence is free at free and licensed under GNU AGPL v3 or later.

SOW has no write-up on Specifiction yet; its figures are above.