Homebrew is a the missing package manager for macOS and Linux. It handles package manager, casks, taps, and formulae, and it's best suited for macos/linux users wanting easy package management. It has been around since 2009, giving it a 17-year head start in building out integrations and refining the product.

The core product is entirely free. Since it's open-source, you can self-host for free with no user limits. It's aimed at individual users, so it's fast to set up but may lack team-management features if you scale.