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.NET vs Node.js: catalog facts
.NET	Node.js
Free Free and open source.	Free Free and open source under the MIT licence, governed by the OpenJS Foundation.
Windows, macOS, Linux, Command line	Windows, macOS, Linux, Command line
Cross-platform on Windows, Linux and macOS Covers web, desktop, mobile, cloud and games	The largest package ecosystem of any language through npm Predictable release schedule with clearly marked long-term support versions
Parts of the wider ecosystem lean towards Microsoft tools and Azure Large install compared with lighter language runtimes	Single-threaded by default, so CPU-heavy work needs worker threads or another process The size and churn of the npm ecosystem is itself a supply chain risk
Downloadable app	Downloadable app
Open source	Open source
License: MIT	License: MIT
No account needed	No account needed
Works offline	Works offline
Official website Full listing and sources Checked September 23, 2026	Official website Full listing and sources Checked September 21, 2026

Catalog facts only. Anything “not stated” is unconfirmed. Check full listings for details.