npm vs Rush

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.

Rush is a monorepo manager for JavaScript developers who build and publish many packages from a shared Git repository. It can install dependencies, link projects, build, generate change logs, update versions, and publish packages to an npm registry. Build modes include parallel, subset, incremental, and distributed builds. Rush puts dependencies in a common folder and uses symlinks to recreate a node_modules folder for each project. Its installation algorithm supports PNPM, NPM, and Yarn. For releases, it gathers change files and updates package versions and changelogs before publishing. Project folders remain self-contained: they can be built without Rush or moved to a separate repository without code changes. Rush runs on Linux, macOS, and Windows; its getting-started demo lists NodeJS as the only prerequisite. Plugins can share configuration and extend features, but the plugin framework is marked experimental. Microsoft does not provide official support; community help is directed to GitHub issues and Rush Stack Zulip. Rush is free and open source.