Conan and vcpkg are the two big ones I’m familiar with, but some projects use CMake FetchContent (with github acting as the CDN/registry), and depending on your requirements you can also just use system package managers on Linux, maybe Homebrew or Nix/Guix, or more niche ones like Spack. I’ve seen projects packaged using self hosted Pacman registries, and that works surprisingly well.
Conan and vcpkg are the two big ones I’m familiar with, but some projects use CMake FetchContent (with github acting as the CDN/registry), and depending on your requirements you can also just use system package managers on Linux, maybe Homebrew or Nix/Guix, or more niche ones like Spack. I’ve seen projects packaged using self hosted Pacman registries, and that works surprisingly well.