fnm
Cross-platform Node.js version manager built in Rust.
Pricing
Free tier
Flat rate
Adoption
→StableLicense
Open Source
Data freshness
Aging · Jun 8, 2026Overview
What is fnm?
fnm is a lightweight and fast Node.js version manager designed to work seamlessly across different operating systems. It allows developers to easily switch between multiple versions of Node.js, making it easier to manage projects with varying dependencies.
Key differentiator
“fnm stands out for its cross-platform compatibility and ease of use, making it an ideal choice for developers working in diverse environments who need to manage multiple Node.js versions efficiently.”
Capability profile
Capability Radar
Honest assessment
Strengths & Weaknesses
↑ Strengths
↓ Weaknesses
The official documentation lacks detailed explanations and practical use cases, making it difficult for new users to understand how to fully leverage fnm's features.
Due to its relatively recent development, the community around fnm is small compared to more established tools like nvm or asdf. This results in fewer resources for troubleshooting and less frequent updates.
Setting up fnm on certain configurations of Windows can be challenging due to shell integration requirements, which may not work out-of-the-box with all terminal emulators or shells.
Fit analysis
Who is it for?
✓ Best for
Developers working on multiple Node.js projects that require different versions of Node.js
Teams needing a lightweight solution to manage Node.js versions across various operating systems
Projects requiring fast and efficient switching between Node.js versions
✕ Not a fit for
Users who prefer graphical user interfaces over command-line tools
Scenarios where extremely high performance is required, as fnm may not be the fastest option available
Cost structure
Pricing
Free Tier
Available
Open source — free to use
Starts at
$0
Model
Flat rate
Enterprise
None
Performance benchmarks
How Fast Is It?
Ecosystem
Relationships
Next step
Get Started with fnm
Step-by-step setup guide with code examples and common gotchas.