fenv review
A focused, free manager for switching Flutter SDKs across projects.
Reviewed by iTechGuides Editors · Editorial team · Updated Oct 2026
fenv is an open-source command-line tool for installing and managing multiple Flutter SDK versions on a local machine. It is designed for Flutter developers who work across projects requiring different SDK releases. Users can select a global Flutter version or pin a project to a local version through a .flutter-version file. The tool supports exact Flutter releases and channel snapshots, including stable, beta, dev, and master.
Its strongest fit is a focused development workflow rather than a broad environment manager. fenv is distributed as a standalone executable, so it does not require Dart or another runtime dependency. Shell initialization supports bash, zsh, fish, and ksh, allowing version selection to fit into common command-line setups. SDK downloads are available for Linux and macOS architectures, and the documented workflows cover SDK path discovery in VS Code and IntelliJ IDEA. Android Studio is also listed among its integrations.
The trade-off is scope. fenv manages Flutter SDK versions, not a wider collection of languages or runtimes, and its documented operating-system support is limited to macOS and Linux. It is also described as a hobby project, which may matter to teams evaluating long-term project expectations. Flutter developers who want a free, open-source standalone tool for global and project-level SDK selection should find its feature set well aligned. Teams needing Windows support or broader environment management should choose a different category fit.
fenv pros and cons
- Where it wins
- Global and project-local Flutter version selection
- Supports exact releases, channel snapshots, and multiple shells
- Standalone executable with VS Code and IntelliJ discovery workflows
- Where it doesn't
- Supports only Flutter SDK management
- Available for macOS and Linux only
- Described as a hobby project by its repository
fenv fact sheet, pricing and score →
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