What is Substack?
CMSSubstack is a content management system (CMS): Newsletter publishing platform. Tech Stack Detector identifies Substack on any website by analysing the HTML source.
Substack is a content management system (CMS) (CMS). See websites using Substack ↓
How Tech Stack Detector detects Substack
Substack is matched from these signals during a single, ordinary page request. Each one contributes to the confidence score shown on a scan.
- Html PatternSubstack CDN or embed
Websites using Substack
No websites in our public index are known to use Substack yet. Scan a site above that uses it to be the first. Your result becomes a shareable /site/… page.
Alternatives to Substack
Other CMS technologies Tech Stack Detector detects: popular alternatives and related tools, most-detected first.
Compare Substack
Side-by-side comparisons of Substack with other CMS technologies.
Popular technologies
The technologies most often detected across all websites scanned on Tech Stack Detector.
Frequently asked questions
What is Substack?
Substack is a content management system (CMS): Newsletter publishing platform. Tech Stack Detector identifies Substack on any website by analysing the HTML source. Its official website is https://substack.com.
How can I tell if a website uses Substack?
Enter any URL into Tech Stack Detector and it reports whether Substack is present, with a confidence score and the exact evidence it matched. Detection is based on the HTML source. No login or crawling of the site is required.
What are some alternatives to Substack?
Other CMS technologies Tech Stack Detector detects include WordPress, Webflow, Drupal, Adobe Experience Manager, Framer and Contentful. You can compare any of them side by side with Substack.
Data last updated October 20, 2026 · based on 618 recently scanned websites.