# nvm-sh/nvm

Node Version Manager - POSIX-compliant bash script to manage multiple active node.js versions. $nvm: 3ArcxqLtXMmBnWbbtfwQgVL3MNnDsggzgGDtXMnjpump

Repository: https://github.com/nvm-sh/nvm
Canonical: https://ross.abutalabs.com/products/nvm
Language: Shell
License: MIT
License Family: permissive
Topics: nvm, nodejs, node, node-js, version-manager, posix, posix-compliant, bash, zsh, shell, nvmrc, lts, install
Last push: 2026-08-18T06:42:47+00:00

## Health v2 (maintenance only)
Score: 94/100 (v2, computed 2026-09-03T02:20:16.233290+00:00)
- activity 98, release rhythm 86, longevity 100
- inputs: {"age_days": 5984, "days_push": 15, "days_rel": 15, "gap_med": 43, "n_releases_24m": 6}
- flags: none
- formula: round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10)

## Adoption (not part of the score)
Stars 94755, forks 10399 (observed 2026-08-28T04:12:23.535506+00:00)

## What it is
nvm is a POSIX-compliant bash script that manages multiple active Node.js versions on a per-shell basis. It lets developers install, switch, and alias Node versions, including automatic switching via .nvmrc files.

## Use cases
- install multiple node.js versions side by side
- switch node version per project with .nvmrc
- set a default node version
- install node lts releases
- migrate global npm packages between node versions
- manage node versions in docker ci pipelines

## When to choose
- you develop Node.js projects requiring different Node versions
- you want a lightweight shell-based version manager without extra dependencies
- you need per-project Node version pinning via .nvmrc

## When to avoid
- you need Windows-native support (use nvm-windows or fnm instead)
- you prefer a single static Node installation managed by your OS package manager
- you manage non-Node runtimes

## Facets
- artifact type: cli-tool
- maturity: stable
- function: cli, developer-tools, package-manager, version-control
- domain: developer-tools, web-development
- platform: cli, cross-platform
- tags: nodejs, version-manager, shell-script, nvmrc, lts, posix, command-line, linux, macos

## Member repositories
- nvm-sh/nvm (main) score 94

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:12:23.535506+00:00.
- Health v2: computed from the inputs above; adoption is never an input.
- Inferred fields (summary, facets, guidance): AI-extracted, prompt v1, taxonomy v1, on 2026-08-29T16:12:38.504939+00:00, confidence not recorded.
  - readme: https://github.com/nvm-sh/nvm (fetched 2026-08-28T04:12:23.535506+00:00, sha f17f20d0a712)
- Data as of 2026-08-30T08:39:29.467469+00:00.