What powers keplerclasses.org?
Last seen Apr 2026 · 12 technologies across 10 categories
CDN
jsDelivr
since Jun 2024
JavaScript frameworks
JavaScript graphics
MathJax
since Jun 2024
JavaScript libraries
LMS
Moodle
since Mar 2022
Programming languages
PHP
since Mar 2022
UI frameworks
Tailwind CSS
since Apr 2022
Video players
VideoJS
since Apr 2022
Web servers
Apache HTTP Server
since Jun 2024
Webmail
Google Workspace
since Aug 2022
Audience
- 100% desktop
United States
Countries where the site has Chrome traffic, strongest markets first.
Open Page Rank
1.37 / 10 · ranked #7,771,389 of all domains
4 referring domains · OpenPageRank
Core Web Vitals
| LCP | 1.6 s |
| INP | 25 ms |
| CLS | 0 |
| TTFB | 1200 ms |
Real user p75, Chrome UX Report, Jun 2026.
Full technology history →
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Recent changes
- dropped Bootstrap Apr 2026