Mise

mise is a polyglot runtime manager (Ruby, Node.js, Python, Go, and more). It replaces tools like rbenv, nvm, and pyenv with a single CLI.

Common commands

Command	Action
`mise use --global ruby@3.3`	Set global Ruby version to 3.3
`mise use ruby@3.2`	Set Ruby 3.2 for the current project (creates `.mise.toml`)
`mise use --global node@22`	Set global Node.js version to 22
`mise install ruby node`	Install the configured versions
`mise current`	Show active tool versions
`mise ls`	List all installed versions
`mise ls-remote ruby`	List available Ruby versions
`mise upgrade ruby`	Upgrade Ruby to the latest compatible version
`mise prune`	Remove unused versions to free disk space

Create a .mise.toml in your project root to pin versions:

[tools]
ruby = "3.3"
node = "22"

Mise picks this up automatically when you cd into the project directory.

Mise supports many tools beyond Ruby and Node.js:

mise use --global python@3.12
mise use --global jq
mise use --global go@latest

See the full list with mise registry or at mise.jdx.dev.