pypi.org Tech Stack
Live first-party scan of pypi.org's tech stack. 7 technologies detected across 7 categories, via Wappalyzer fingerprinting + DNS CNAME + TLS certificate inspection. Last change: Sep 13, 2026 - pypi.org removed C3.js. Scan timestamp: Oct 11, 2026.
Infrastructure Layer
Fastly
GlobalSign
Advertising
EthicalAds
CDN
Fastly
JavaScript frameworks
Stimulus
Programming languages
Python
SSL/TLS certificate authority
GlobalSign
Security
HSTS
Web servers
gunicorn
Tech Stack Changes
Compare pypi.org's Stack
How was this detected?
For pypi.org, DetectZeStack identified 7 technologies: 5 via HTTP fingerprinting, 1 via TLS handshake, and 1 via DNS records.
Detection runs four independent layers in parallel: HTTP response headers, TLS handshake metadata, certificate issuer inspection, and DNS record lookups. The breakdown above shows which layers fired for this specific domain — some sites carry most of their fingerprint in HTTP, others rely heavily on infrastructure (DNS/TLS).
How pypi.org compares
Symmetric diff between pypi.org and similar sites detected on DetectZeStack.
vs cosworth.com — 1 shared, 4 unique here, 4 unique there
Only on pypi.org: HSTS, Python, Stimulus, gunicorn
Only on cosworth.com: jQuery, jQuery Migrate, jQuery UI, IIS
vs www.uhg.com.au — 2 shared, 4 unique here, 4 unique there
Only on pypi.org: Python, Stimulus, gunicorn, EthicalAds
Only on www.uhg.com.au: WordPress, Yoast SEO, jQuery, jQuery Migrate
vs www.greenstone.com.au — 2 shared, 4 unique here, 4 unique there
Only on pypi.org: Python, Stimulus, gunicorn, EthicalAds
Only on www.greenstone.com.au: Amazon Web Services, Google Tag Manager, Imperva, Amazon ALB
Need this data programmatically? Our API detects 7,300+ technologies at 1/50th the cost of BuiltWith. 100 free requests/month, no credit card.
Get Free API Key Chrome ExtensionWhat technologies does pypi.org use?
pypi.org uses 7 technologies across 7 categories. The full breakdown is listed above, organized by function. Each technology was identified through analysis of HTTP headers, DNS records, TLS certificates, and HTML content.
What CDN does pypi.org use?
pypi.org uses Fastly for content delivery. CDN providers are identified through DNS CNAME records and HTTP response headers.
What JavaScript framework does pypi.org use?
pypi.org uses Stimulus. JavaScript frameworks are detected through script analysis and HTML markup patterns.
How is pypi.org's tech stack detected?
DetectZeStack identifies technologies on pypi.org through multiple detection methods: HTTP response header analysis, HTML and JavaScript content scanning, DNS record lookups, and TLS certificate inspection. This multi-layered approach catches technologies that single-method tools miss.