I use nix & brew as my package managers on macOS.
Some nice comments on brew and nix package managers
Entropic - Federated package registry for anything.
The economics of package management (Lobsters)
Topgrade - Upgrade everything.
Repology - Monitors a huge number of package repositories and other sources comparing packages versions across them and gathering other information.
Managing Developer Environments with Conda (2020)
Developers shouldn't distribute their own software (2020)