Another recommendation for mise, in my case it has already fully replaced brew, stow and direnv since I started using it this January, and it has many more features I'm not using yet (secret management, tasks, automation, ...), all from a single rust binary. Also, unlike homebrew/linuxbrew, the install path for apps can be set to anywhere and is fully portable (it's all relative symlinks).

So far I never had any issue with it or any backward incompatibilities when upgrading, despite the very frequent releases and constant new features. The developer also seems very security minded (he immediately added a "minimum release age" feature for all apps when the trivy github action debacle was made public)