npm vs NuGet

npm is a JavaScript package registry and command-line tool for sharing code and managing packages. The Registry and CLI are free for public package use, and the Free plan lets public package authors publish unlimited public packages. npm accepts package.json folders, gzipped tarballs, URLs, name-and-version or name-and-tag references, and Git URLs. Its tools support dependency resolution, lockfiles, workspaces, private registry authentication, and offline installation. It runs on Linux, macOS, Windows, and other operating systems through Node.js installers or version managers. For private packages, the Paid user account plan is $7 a month; Pro is also $7 a month for individual creators, while Teams is $7 per user per month for teams and organizations. Pro includes unlimited private packages and package-based permissions; Teams adds team-based permissions. Organizations can manage members, teams, roles, permissions, and package access. All plans include basic support and automatic security warnings. Paid billing starts when card details are submitted, with the first month charged immediately.

NuGet is a package manager for .NET projects, with tools to create and consume packages and the NuGet Gallery as a central repository. Packages use the .nupkg format and can include compiled code, related files and a descriptive manifest; .snupkg is also supported. NuGet resolves dependency graphs and records package identifiers and versions so projects can restore dependencies across machines and build servers. PackageReference and packages.config are supported, with PackageReference required for .NET SDK-style projects. Developers can manage packages in Visual Studio or use the dotnet CLI and nuget.exe. Packages may be hosted in private cloud locations, private networks or local file systems. Restore can check dependencies against configured vulnerability sources and report warnings. NuGet also supports lockfiles, offline installation, private registry authentication and package signatures. The service is free, and the Gallery code is open source under Apache 2.0. The dotnet CLI works on Windows, macOS and Linux; nuget.exe runs on Windows and can run on macOS and Linux with Mono, with limitations.