...The tool keeps Node and npm isolated per version, which prevents project conflicts and makes upgrades or rollbacks reversible. Commands for listing, aliasing, and uninstalling versions keep long-lived environments tidy, while simple shims make the active toolchain transparent to existing scripts. Because nodebrew is lightweight and has minimal external dependencies, it’s popular on servers, CI agents, and developer laptops alike. In everyday use, it removes the friction from testing code against multiple Node releases and keeping old projects alive alongside new ones.