About Express
Express is a web application framework for Node.js, released as free and open-source software under the MIT License. It is designed for building web applications and APIs.
How many people use Express
GitHub · npm
#5 of 59 Web servers we have counts for (of 91) · bars are GitHub stars across these neighbours; the category leader is Next.js at 142k · as of September 7, 2026
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Express#5 of 59 Web servers
Flask#4 of 59 Web servers
Audit any site that runs Express.
Enter a URL to score its stack for technology quality, version health, Lighthouse performance - and AI-readiness.
Implied technologies
Detecting Express implies these are in the stack too - a report lists them alongside it.
How we audit Express
We measure the detected version against Express's release history and grade the surrounding stack with a Lighthouse-grade quality audit. Weak or outdated links weigh more - one risky dependency can pull the whole score down.
How the score worksMore technologies in Web servers
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