Tech Stack Index · news
What is substack.com built with?
As of 2026-10-02, substack.com is built with 7 detected technologies: it runs on Substack, uses Express, is served through Cloudflare and measures traffic with Cloudflare Web Analytics.
Technologies detected on substack.com
| Category | Technology | Version | Confidence |
|---|---|---|---|
| CMS | Substack | – | high |
| Backend framework | Express | – | high |
| Programming language | Node.js | – | high |
| CDN | Cloudflare | – | high |
| Analytics | Cloudflare Web Analytics | – | high |
| Monitoring | Datadog RUM | – | high |
| Security / bot protection | Cloudflare Bot Management | – | high |
Detected on 2026-10-02 from public HTML, scripts and HTTP response headers of the home page. High confidence: a definite signature or two different signals; medium: one weak signal.
FAQ
- What technologies does substack.com use?
- As of 2026-10-02, substack.com is built with 7 detected technologies: it runs on Substack, uses Express, is served through Cloudflare and measures traffic with Cloudflare Web Analytics. Detected from the public home page HTML and response headers.
- What CMS does substack.com use?
- substack.com uses Substack (detected 2026-10-02).
- What framework is substack.com built with?
- substack.com uses Express (detected 2026-10-02).
- What CDN or hosting does substack.com use?
- substack.com uses Cloudflare (detected 2026-10-02).
- What analytics does substack.com use?
- substack.com uses Cloudflare Web Analytics (detected 2026-10-02).
More about substack.com
- Does substack.com block GPTBot and other AI crawlers? (AI Crawler Index)
- All technologies in the Tech Stack Index