spack/spack

An integrated package configuration, build and deployment system for software

A system-level, binary package and environment manager running on all major operating systems and platforms.

Effing package management! Build packages for multiple platforms (deb, rpm, etc) with great ease and sanity.

The Fast Cross-Platform Package Manager

UniGetUI: The Graphical Interface for your package managers. Could be terribly described as a package manager manager to manage your package managers

See all your installed packages in one place. (Official package manage for RyokuArch)

Powerful system-level package manager for Linux, macOS and Windows written in Rust – building on top of the Conda ecosystem.

Conan - The open-source C and C++ package manager

🎁 snapshot every package on your machine to one file, restore it on a new one