asdf-vm 
Manage multiple runtime versions with a single CLI tool, extendable via plugins - docs at asdf-vm.com
asdf-vm is a CLI tool that can manage multiple language runtime versions on a per-project basis. It is like gvm, nvm, rbenv & pyenv (and more) all in one! Simply install your language's plugin!
Why use asdf-vm?
- single CLI for multiple languages
- consistent commands to manage all your languages
- single global config keeping defaults in one place
- single
.tool-versionsconfig file per project - support for existing config files
.node-version,.nvmrc,.ruby-versionfor easy migration - automatically switches runtime versions as you traverse your directories
- simple plugin system to add support for your language of choice
- completion scripts managed by the plugin, not you!
Documentation
Please head over the documentation site for more information!
Contributing
See CONTRIBUTING.md in the repo or the Contributing section on the docs site.