Detect 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.
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Websites using Express
267 hostnames in the PluginView corpus for this technology.
| Hostname | Last seen |
|---|---|
| medium.com | 8/6/2026 |
| coursera.org | 8/3/2026 |
| substack.com | 8/6/2026 |
| replit.com | 8/6/2026 |
| indiehackers.com | 8/3/2026 |
Whole list · $21.36 (267 × $0.08)
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What a detection means
- Establishes
- One or more public signals on the scanned page matched a known Express signature at the time of the scan.
- Does not establish
- A sitewide install of Express, an active vendor contract, exclusive use, or that Express is still in place today.
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How to check a site for Express
- 1. Enter the website URL in the scan form — homepage, pricing, checkout, or login pages usually expose the strongest Express signals.
- 2. PluginView reads only public responses and scores them against proprietary Express fingerprints. Rule bodies and identifiers are not published.
- 3. Review the confidence score and text explanation for Express on the results page.
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Commonly implies
A confirmed Express match also implies these technologies are present.
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FAQ: detecting Express
- Can PluginView detect Express without logging in?
- Yes. PluginView only reads publicly accessible responses when checking for Express. It does not bypass authentication or paywalls.
- What category is Express?
- Express is classified under Web frameworks, Web servers in the PluginView directory.
- Does PluginView publish Express fingerprint rules?
- No. Detection uses proprietary fingerprint rules that are not published. Scan results explain matches in plain language without disclosing rule bodies or identifiers.
