What powers 4system.com?
Last seen Jun 2026 · 29 technologies across 14 categories
Authentication
Google Sign-in
since Dec 2025
Font scripts
Google Font API
since Dec 2022
Hosting
GoDaddy
since Aug 2022
JavaScript frameworks
JavaScript graphics
JavaScript libraries
core-js
since Aug 2022
DataTables
since Aug 2022
jQuery
since Aug 2022
SweetAlert2
since Dec 2025
Swiper
since Sep 2023
Miscellaneous
SWFObject
since Aug 2022
Page builders
Programming languages
Rich text editors
Security
HSTS
since Sep 2022
UI frameworks
Video players
Web servers
Audience
- 91% desktop
- 9% phone
Poland
Countries where the site has Chrome traffic, strongest markets first.
Open Page Rank
2.48 / 10 · ranked #2,522,481 of all domains
16 referring domains · OpenPageRank
Core Web Vitals
| LCP | 1.3 s |
| INP | 50 ms |
| CLS | 0 |
| TTFB | 600 ms |
Real user p75, Chrome UX Report, Jun 2026.
Page
- Language: Polish
- Weight: 6.8 MB · 79 requests
Homepage as crawled by the HTTP Archive, Jul 2026.
Subdomains
| Host | Techs |
|---|---|
| unext.4system.com | 19 |
| uniqa.4system.com | 19 |
| learningzone.4system.com | 18 |
| tueuropa.4system.com | 18 |
| uniqa-zaw.4system.com | 17 |
| vig.4system.com | 17 |
| wbtexpress10.4system.com | 9 |
| 4system.com | 7 |
| pl.4system.com | 7 |
| www.4system.com | 6 |
Full technology history →
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Recent changes
- detected Nginx Feb 2026