Satis is a static Composer repository generator. It works, but requires manual rebuilds, has no UI, and needs a full PHP stack. Cargoman replaces all of that with a single Rust binary.
Private Packagist is a solid hosted registry, but its per-user pricing adds up fast. Cargoman offers unlimited seats at a flat rate, plus a self-hosted option.
Start with a free Community edition or try Pro with unlimited seats for $29/mo.