What powers cal.eu?
Last seen Jun 2026 · 26 technologies across 18 categories
Advertising
Twitter Ads
since May 2026
Analytics
PostHog
since May 2026
Authentication
NextAuth.js
since Dec 2025
CDN
Cloudflare
since Mar 2026
CMS
Framer Sites
since May 2026
Development
Turbopack
since Jan 2026
Font scripts
Google Font API
since May 2026
Issue trackers
Sentry
since Dec 2025
JavaScript frameworks
JavaScript graphics
Live chat
Intercom
since Feb 2026
Miscellaneous
PaaS
Vercel
since Dec 2025
Performance
Priority Hints
since Dec 2025
Programming languages
Node.js
since Dec 2025
Security
Cloudflare Bot Management
since Mar 2026
HSTS
since Dec 2025
Tag managers
Google Tag Manager
since May 2026
UI frameworks
Audience
- 76% desktop
- 24% phone
France
Belgium
Switzerland
Portugal
Israel
Denmark
Countries where the site has Chrome traffic, strongest markets first.
Open Page Rank
6.90 / 10 · ranked #50,527 of all domains
277 referring domains · OpenPageRank
Core Web Vitals
| LCP | 2.7 s |
| INP | 175 ms |
| CLS | 0 |
| TTFB | 600 ms |
Real user p75, Chrome UX Report, Jun 2026.
Page
- Language: English
- CDN: Cloudflare
- Weight: 1.5 MB · 67 requests
- Structured data: OpenGraph, Twitter Cards
Homepage as crawled by the HTTP Archive, Jul 2026.
Subdomains
| Host | Techs |
|---|---|
| app.cal.eu | 21 |
| circle.cal.eu | 18 |
| www.cal.eu | 13 |
Full technology history →
Report an incorrect detection
Recent changes
- detected Base UI Apr 2026
- detected Three.js Apr 2026
- detected Cloudflare Mar 2026
- detected Cloudflare Bot Management Mar 2026
- detected Intercom Feb 2026
- detected Turbopack Jan 2026