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sei.org

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Estimated trafficEstimated from public data and our own crawl of sei.org.

Est. monthly visits

824K

as of Aug 2026

Est. by device type

Desktop 69%

Mobile 31%

500K1M1.5M2M202420252026Sep 2023: about 740K visitsOct 2023: about 745K visitsNov 2023: about 776K visitsDec 2023: about 726K visitsJan 2024: about 759K visitsFeb 2024: about 766K visitsMar 2024: about 750K visitsApr 2024: about 724K visitsMay 2024: about 676K visitsJun 2024: about 582K visitsJul 2024: about 531K visitsAug 2024: about 547K visitsSep 2024: about 650K visitsOct 2024: about 693K visitsNov 2024: about 701K visitsDec 2024: about 703K visitsJan 2025: about 796K visitsFeb 2025: about 839K visitsMar 2025: about 859K visitsApr 2025: about 1.1M visitsMay 2025: about 1.1M visitsJun 2025: about 863K visitsJul 2025: about 869K visitsAug 2025: about 1.1M visitsSep 2025: about 1.2M visitsOct 2025: about 1.1M visitsNov 2025: about 843K visitsDec 2025: about 791K visitsJan 2026: about 644K visitsFeb 2026: about 628K visitsMar 2026: about 611K visitsApr 2026: about 736K visitsMay 2026: about 652K visitsJun 2026: about 586K visitsJul 2026: about 689K visitsAug 2026: about 824K visits

Estimated employeesEstimated from public data and our own crawl of sei.org.

Est. employees

43

Social profiles

Rankings

Where sei.org lands by estimated traffic, overall and among the sites we rank in each of its categories.

Detected technologies (25)Detected on sei.org. Site counts are our own detections across the web.

Compare this stack →
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WordPress
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75.7M sites
Web Analytics & Measurement
Cloudflare Browser Insights
Cloudflare real-user monitoring capturing page performance metrics
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Google Tag Manager
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63.8M sites
Email & Push Marketing
Brevo
Email marketing and CRM platform for campaigns and automation
1.3M sites
Mailchimp
Email marketing platform for campaigns and audience management
4.2M sites
Business Email & Productivity
Microsoft 365
Microsoft suite for business email, office apps, and collaboration
18.2M sites
Business & Collaboration Apps
Canva
Online design tool with website publishing capabilities.
27.6K sites
Communications
Amazon SES
Amazon service for sending transactional and bulk email
1.3M sites
SendGrid
Cloud email delivery service for transactional and marketing mail
3.8M sites
CDN & Edge Delivery
Cloudflare
Global CDN and edge platform delivering and protecting websites
161.4M sites
cdnjs
Free public CDN hosting popular open-source JavaScript libraries
18.2M sites
Security & Bot Defense
Apple
Generic Apple service or integration detected on the site
519.6K sites
Privacy & Cookie Consent
iubenda
Compliance solution for privacy policies and cookie consent
652.3K sites
Languages & Back-End Frameworks
PHP
Server-side scripting language powering a large share of websites
114.2M sites
JavaScript Libraries & Widgets
jQuery
Widely used JavaScript library simplifying DOM manipulation, events, and AJAX
114.7M sites
jQuery Migrate
Compatibility shim restoring deprecated jQuery APIs for older code
53M sites
Databases & Caching
MySQL
Popular open-source relational database used by many web applications
77.9M sites
Performance & Optimization
Priority Hints
Browser resource hints signaling fetch priority for faster loading
74.5M sites
SEO & Content Discovery
Google
Generic Google service or script detected on the site
32.3M sites
Open Graph
Metadata protocol controlling how page links preview on social platforms
151.8M sites
Yoast SEO
WordPress plugin managing on-page SEO, sitemaps, and metadata
21.4M sites
Yoast SEO Premium
Premium WordPress SEO plugin with advanced optimization features
1.9M sites
Fonts & Icons
Google Font API
Google service delivering free web fonts to websites
105.7M sites
other
Anthropic
Developer of the Claude AI models and the API behind them. Sites listed here have verified their domain with Anthropic
160.5K sites
MailChimp

Infrastructure

Hosting / CDNCloudflare
Mail (MX)Detected

WordPress plugins & themes (11)

Detected on sei.org by our own scan.

Yoast9.2M sites
Wordfence Security – Firewall, Malware Scan, and Login Security
Security & Privacy
4M sites
Redirection
SEO
2.6M sites
Regenerate Thumbnails
Other
806.8K sites
Objectcache796.6K sites
Post Duplicator
Content & Media
154.8K sites
iubenda | All-in-one Compliance for GDPR / CCPA Cookie Consent + more
Security & Privacy
143.4K sites
MtphrPostDuplicatorSettings129.5K sites
Publishpress Future85.9K sites
Relevanssi – A Better Search
Productivity & Operations
32.4K sites
Spektra Forms20 sites

Site footprint

Structured data

BreadcrumbListschema.org type
EntryPointschema.org type
ImageObjectschema.org type
ListItemschema.org type
Organizationschema.org type
PropertyValueSpecificationschema.org type
ReadActionschema.org type
SearchActionschema.org type
WebPageschema.org type
WebPageElementschema.org type
WebSiteschema.org type

Domain details

CopyrightStockholm Environment Institute 2026

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