Substack
CMS
Drupal
CMSSubstack vs Drupal
Substack and Drupal are both popular choices, but they serve different needs. Substack is a CMS with a traditional, manual approach to building, while Drupal is a CMS that prioritises developer or designer control.
Below you'll find a side-by-side breakdown of detection signals, AI scores, and technical fingerprints — plus our honest take on which builder wins for different use cases.
Side-by-Side Comparison
| | |
|---|---|---|
| Category | CMS | CMS |
| AI Score | 20/100 — Traditional | 20/100 — Traditional |
| Detection Signals | 5 patterns | 7 patterns |
| Script Detection | 2 patterns | 2 patterns |
| CDN Detection | 1 domains | — |
| Header Detection | — | 2 headers |
| Sites Detected | 4 scans | 95 scans |
| Best For | Blogs & content-heavy sitesTry Substack → | Blogs & content-heavy sitesTry Drupal → |
| Official Website | Visit | Visit |
Example Websites
Substack websites
Substack
CMS
Substack is a cms with an AI Score of 20/100 (Traditional). Our detection engine uses 5 signal patterns to identify Substack-built sites.
Drupal
CMS
Drupal is a cms with an AI Score of 20/100 (Traditional). Our detection engine uses 7 signal patterns to identify Drupal-built sites.
Platform Overviews
Substack
Substack is the largest and most influential newsletter and subscription platform, hosting hundreds of the world's top writers, journalists, and independent media outlets — including publications that have generated millions in annual subscriber revenue. It pioneered the paid newsletter model with simple 10% revenue sharing, a writer-friendly setup experience, and a built-in discovery network. Substack Recommendations has become a major growth channel, with reader suggestions driving new subscriber acquisition. Substack sites are identifiable through resources loaded from substackcdn.com for media and assets, the Substack JavaScript runtime on all publication pages, and distinctive *.substack.com subdomain patterns. Custom domain sites still load all media through substackcdn.com, making it a reliable detection signal. The platform is free to use with Substack taking 10% of paid subscription revenue.
Drupal
Drupal is a powerful, highly extensible open-source CMS that excels in complex, enterprise-grade web projects — particularly government websites, higher education portals, and large media organizations. Its modular architecture supports hundreds of thousands of contributed modules and has a reputation for handling complex content architectures, multilingual sites, and high-security requirements. Major Drupal users include the White House, Nasdaq, and the European Commission. Drupal sites are identifiable through the x-generator: Drupal HTTP response header, /sites/default/files/ paths for uploaded media, /modules/ and /themes/ directory paths for contributed code, and drupal.js loading the Drupal JavaScript API. The Drupal.settings JavaScript object is present on authenticated pages, and drupal-specific HTML class names appear throughout the markup. Drupal is free and open-source, with hosting costs depending on provider.
Key Differences
- Both Substack and Drupal are classified as CMS tools, making them the most direct competitors in this comparison.
- Substack scores higher on AI involvement (20/100 vs 20/100 for Drupal), meaning it relies more heavily on AI for site generation and content creation.
- Our detection engine identifies Substack using 5 fingerprint patterns and Drupal using 7 patterns — more signals generally means more reliable detection.
Which Should You Choose?
Choose Substack if…
- You prefer a cms solution
- You want more manual control over the final output
- Substack's detection fingerprint of 5 signals means your site is reliably identifiable
Choose Drupal if…
- You need a cms approach
- You prefer traditional building tools with predictable output
- Drupal's ecosystem and community better match your team's existing workflow
Our Pick — Based on 99+ detections
Drupal
Detected 24× more often than Substack across our database of scanned sites.
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