What powers pen.so?
Last seen May 2026 · 9 technologies across 7 categories
CDN
Cloudflare
since Jul 2023
Miscellaneous
PaaS
Netlify
since Aug 2022
Programming languages
Ruby
since Oct 2022
Security
HSTS
since Sep 2022
Static site generator
UI frameworks
Tailwind CSS
since Mar 2026
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Recent changes
- dropped Fathom Apr 2026
- dropped Font Awesome Apr 2026
- dropped Google Font API Apr 2026