This is a cross-platform, universal version management tool that allows for the quick installation and switching of different versions of programming languages through the command line, and supports custom source addresses. Compared to independent version management tools for each language (such as nvm for Node.js, fvm for Flutter, gvm for Groovy, etc.), this project helps developers avoid the cumbersome process of learning and memorizing multiple tools, managing multiple programming language versions with just one tool and a single command.