What powers rug.nl?
Last seen Jun 2026 · 168 technologies across 43 categories
Advertising
Google Publisher Tag
since Sep 2023
Analytics
Chartbeat
since Sep 2023
Cloudflare Browser Insights
since Mar 2026
Google Analytics
since Jun 2018
Moat
since Apr 2023
Oracle Moat Measurement
since Oct 2023
Piwik PRO Core
since Jun 2024
Umami
since Feb 2022
Caching
WP Rocket
since Mar 2023
CDN
Amazon CloudFront
since Dec 2023
Amazon S3
since Nov 2022
cdnjs
since Nov 2021
Cloudflare
since Oct 2020
Google Cloud CDN
since Jul 2022
Google Hosted Libraries
since Feb 2022
jQuery CDN
since Feb 2022
jsDelivr
since Oct 2020
Unpkg
since Nov 2022
CMS
Comment systems
Cookie compliance
Customer data platform
Exponea
since Apr 2023
Databases
Digital asset management
Frontify
since Jan 2025
DMS
Ecommerce
Cart Functionality
since Aug 2020
Editors
Font scripts
Font Awesome
since Aug 2018
Google Font API
since Aug 2018
Twitter Emoji (Twemoji)
since Feb 2026
Typekit
since Oct 2024
IaaS
Google Cloud
since Jul 2022
Issue trackers
JavaScript frameworks
Backbone.js
since Oct 2020
Emotion
since Dec 2022
GSAP
since Dec 2024
Handlebars
since Sep 2021
Hogan.js
since Sep 2022
React
since Mar 2021
Socket.io
since Dec 2020
Vue.js
since Apr 2020
Zone.js
since Jul 2022
JavaScript graphics
JavaScript libraries
AOS
since Mar 2023
Bootstrap Table
since Sep 2025
Browser-Update.org
since Mar 2024
Clipboard.js
since Aug 2018
Day.js
since Nov 2023
DHTMLX
since Jan 2023
LazySizes
since Mar 2023
Lightbox
since Dec 2021
Modernizr
since Aug 2018
Moment.js
since Sep 2020
OWL Carousel
since Aug 2024
Select2
since Aug 2018
Selectize
since Nov 2022
Slick
since Nov 2022
SweetAlert2
since Sep 2024
TurfJS
since Mar 2023
Load balancers
Amazon ALB
since Aug 2022
Amazon ELB
since Jan 2023
Maps
Miscellaneous
Operating systems
Debian
since Aug 2018
Scientific Linux
since Apr 2023
Ubuntu
since Aug 2018
Windows Server
since Aug 2018
PaaS
Amazon Web Services
since Oct 2020
Heroku
since Oct 2020
Page builders
WordPress Block Editor
since Dec 2024
WordPress Site Editor
since Feb 2026
Performance
Priority Hints
since Jul 2024
Programming languages
Reverse proxies
F5 BigIP
since May 2019
Rich text editors
CKEditor
since Aug 2018
Monaco Editor
since Oct 2023
RUM
New Relic
since Dec 2022
Security
Cloudflare Bot Management
since Oct 2023
HSTS
since Sep 2022
SEO
Tag managers
Google Tag Manager
since Nov 2020
UI frameworks
Bootstrap
since Aug 2018
MUI
since Dec 2022
Pure CSS
since Aug 2024
Semantic UI
since Mar 2023
Tailwind CSS
since Apr 2022
W3.CSS
since Mar 2026
Video players
Flowplayer
since Apr 2022
Kaltura
since Dec 2022
Web frameworks
Web Server Extensions
Web servers
Apache HTTP Server
since Aug 2018
EZproxy
since Mar 2023
Nginx
since Aug 2018
OpenResty
since Jan 2020
Webmail
Google Workspace
since May 2025
RainLoop
since Apr 2023
Widgets
Wikis
WordPress plugins
Polylang
since Jan 2026
WordPress themes
Twenty Twenty-Five
since Feb 2026
Twenty Twenty-One
since Dec 2024
Top search keywords
| Keyword | Position | Est. monthly visits |
|---|---|---|
| university of groningen | #1 | 1,600 |
| groningen university | #1 | 820 |
| groningen | #4 | 650 |
| penn world tables | #1 | 490 |
| international comparison program | #22 | 330 |
| international comparison program | #32 | 320 |
| sum laude | #52 | 210 |
| the netherlands | #73 | 160 |
| groning | #7 | 130 |
| groningen nl | #6 | 120 |
| university of groningen netherlands | #8 | 110 |
| chemical engineering | #79 | 100 |
| sures | #51 | 100 |
| rijksuniversiteit groningen | #1 | 97 |
| frisian people | #4 | 86 |
| saharan africa | #96 | 85 |
| scanning probe microscope | #57 | 85 |
| dalai lama controversy | #2 | 81 |
| vincent willem van gogh | #5 | 75 |
| k boltzmann | #55 | 70 |
| ed norton | #66 | 70 |
| franklin rosalind | #51 | 64 |
| master | #38 | 63 |
| charge syndrome | #37 | 57 |
| crash course | #54 | 57 |
The site's top keywords in Google (US), with the visits each one is estimated to bring per month.
Top backlinks
Top links pointing at the site, one per source domain, strongest first. The anchor text opens the page carrying the link.
Audience
- 90% desktop
- 10% phone
Netherlands
Nigeria
India
Germany
Italy
Spain
Countries where the site has Chrome traffic, strongest markets first.
Open Page Rank
8.60 / 10 · ranked #1,674 of all domains
8,082 referring domains · OpenPageRank
Search traffic
11,600 est. monthly organic visits (US)
9,018 keywords in Google's top 30
Core Web Vitals
| LCP | 2.2 s |
| INP | 50 ms |
| CLS | 0.05 |
| TTFB | 500 ms |
Real user p75, Chrome UX Report, Jun 2026.
Page
- Language: English
- Weight: 2.5 MB · 56 requests
Homepage as crawled by the HTTP Archive, Jul 2026.
Subdomains
| Host | Techs |
|---|---|
| frisia.rug.nl | 22 |
| ishop.rug.nl | 19 |
| rbpreg.gai.rug.nl | 19 |
| museumtickets.rug.nl | 16 |
| rugconnect.rug.nl | 16 |
| video.rug.nl | 16 |
| dbc.rug.nl | 15 |
| kaf.video.rug.nl | 15 |
| research.rug.nl | 15 |
| webmail.astro.rug.nl | 15 |
| astrodrive.astro.rug.nl | 14 |
| git.lwp.rug.nl | 14 |
| gitrepo.service.rug.nl | 14 |
| libguides.rug.nl | 14 |
| dcagreeklatin.web.rug.nl | 13 |
| fse.studenttheses.ub.rug.nl | 13 |
| gsms.rug.nl | 13 |
| libcal.rug.nl | 13 |
| lustrum.ai.rug.nl | 13 |
| opentextbooks.rug.nl | 13 |
| optiecon.rug.nl | 13 |
| amazingeuropeanbison.web.rug.nl | 12 |
| arts.studenttheses.ub.rug.nl | 12 |
| facsimile.ub.rug.nl | 12 |
Full technology history →
Report an incorrect detection
Recent changes
- dropped BugSnag Jun 2026
- dropped Google Cloud Storage Jun 2026
- dropped Hotjar Jun 2026
- dropped CentOS Apr 2026
- dropped Matomo Analytics Apr 2026
- detected Cloudflare Browser Insights Mar 2026
- detected W3.CSS Mar 2026
- dropped hCaptcha Feb 2026