Online tool to check if the package name is available in npm registry.
Checks if a given string is a valid npm package name adhering to npm rules and best practice
A list for npm registry mirrors.
The fastest NPM install does nothing because you already have it
the package manager for JavaScript
Package for Registry Test
Secure NPM PoC
allows you to check whether a package or organization name is available on npm.
check for updated package.json dependencies
cnpm: npm client for China mirror of npm
Is the given string an acceptable npm package name?
NPM registry manager, fast switch between different registries: npm, cnpm, nj, taobao
Fetches the package information from a npm package written 100% in Elixir
A tool for check available dependency packages across npmjs, PyPI or RubyGems registry.