Freedom251 › Development Environment Management Tools
mise
What mise is
mise is a development environment setup tool for Linux, macOS, and Windows. It installs development tools, selects versions for each project, and supports hundreds of tools. A project’s mise.toml can define its tools, environment variables, and tasks, while a global configuration can hold personal defaults. mise can automatically activate Python virtual environments when you enter a project. Developers can share tasks and run them when files change. Shell activation is documented for bash, zsh, fish, nushell, PowerShell, and other shells; the documentation also covers IDE integration and CI examples for GitHub Actions, GitLab CI, and Xcode Cloud. Safe mode can block project configuration from running code or injecting environment variables in supported operations, though some backends cannot resolve versions in that mode. The project advises reviewing configuration from others because tasks, hooks, and some environment directives can execute code. mise is an open-source CLI tool, offered free under the MIT license.
Who it suits
mise suits developers who want project-specific tool versions, environment variables, and shared tasks across Linux, macOS, or Windows. It may also suit teams using IDEs or CI integrations.
What it does well
- Free and MIT licensed.
- Supports hundreds of development tools.
- Can activate Python virtual environments automatically.
- Project tasks can run when files change.
- Documented for multiple shells and CI systems.
What to know first
- Some backends cannot resolve versions in safe mode.
- Tasks, hooks, and some environment directives can execute code.
Plans
| Plan | Billed and limits | Price |
|---|---|---|
| mise (open-source CLI) | MIT licensed · macOS, Linux, Windows | Free |
As mise.en.dev lists them, read 2 Oct 2026. The maker's own page has the final word.
Getting started
- Visit the mise website.
- Use the open-source CLI on Linux, macOS, or Windows.
- Configure project tools, environment variables, and tasks in mise.toml, or set personal defaults globally.
- Enable shell activation for your shell using the documentation.
- Review project configuration from others before using tasks, hooks, or environment directives.
Verdict
mise combines tool version selection, project environments, and task running in one CLI. Review project configuration before trusting it, since some directives can execute code.
Questions
How much does mise cost?
The listed open-source CLI plan is free. mise is MIT licensed.
Which operating systems does mise support?
Linux, macOS, and Windows.
What can a project configure with mise.toml?
It can declare tools, environment variables, and tasks.
Which shells are supported?
Shell activation is documented for bash, zsh, fish, nushell, PowerShell, and other shells.
Can mise be used in CI?
The documentation includes GitHub Actions integration through mise-action and examples for GitLab CI and Xcode Cloud.
Who created mise?
The project says it was initially created by Jeff Dickey and is developed with contributors.
Facts from mise's own pages
- CI support
- The CI documentation also includes examples for GitLab CI and Xcode Cloud. · mise.en.dev, 2 Oct 2026
- Configuration
- A project's mise.toml can declare tools, environment variables, and tasks, while global configuration supplies personal defaults. · mise.en.dev, 2 Oct 2026
- Configuration trust
- The getting-started guide advises reviewing other people's configuration because tasks, hooks, and some environment directives can execute code. · mise.en.dev, 2 Oct 2026
- Environments
- It manages project environment variables and can automatically activate Python virtual environments when entering projects. · mise.en.dev, 2 Oct 2026
- Integrations
- The documentation covers IDE integration and provides a GitHub Actions integration through mise-action. · mise.en.dev, 2 Oct 2026
- Maker
- The project says mise was initially created by Jeff Dickey and is developed with contributors. · mise.en.dev, 2 Oct 2026
- Purpose
- mise is a development environment setup tool that uses mise.toml to configure project tools, environments, and commands. · mise.en.dev, 2 Oct 2026
- Security
- The documentation describes safe mode as a way to prevent project configuration from executing code or injecting environment variables in supported operations. · mise.en.dev, 2 Oct 2026
- Security limits
- The documentation says some backends need code execution and cannot resolve versions in safe mode. · mise.en.dev, 2 Oct 2026
- Shell support
- Shell activation is documented for bash, zsh, fish, nushell, PowerShell, and other shells. · mise.en.dev, 2 Oct 2026
- Support
- The project invites questions, bug reports, and suggestions and directs users to its contact guidance. · mise.en.dev, 2 Oct 2026
- Task runner
- It lets developers share project tasks and run tasks when files change. · mise.en.dev, 2 Oct 2026
- Tool management
- It installs development tools and selects versions per project, with support for hundreds of tools. · mise.en.dev, 2 Oct 2026
- Tool registry
- The registry maps short tool names to installation backends, and the documentation says mise can list registered tools with mise registry. · mise.en.dev, 2 Oct 2026