# What does Sei – Stockholm Environment Institute use? Sei – Stockholm Environment Institute (sei.org) shows public evidence of 21 tools, according to runsonwhat (last checked 2026-10-15). - Industry: Research - Size: 201–1,000 employees - Based in: Stockholm, Sweden - Founded: 1989 - LinkedIn: https://www.linkedin.com/company/stockholm-environment-institute ## Edge & Hosting | Tool | Category | Evidence | Since | |---|---|---|---| | [Cloudflare](https://www.runsonwhat.com/reverse/cloudflare) | CDN & Edge | DNS records, Website code | | ## Application | Tool | Category | Evidence | Since | |---|---|---|---| | [jQuery](https://www.runsonwhat.com/reverse/jquery) | Frontend | Website code | | | [Anthropic](https://www.runsonwhat.com/reverse/anthropic) | AI | DNS verification records | | ## Data & Observability | Tool | Category | Evidence | Since | |---|---|---|---| | [Google Tag Manager](https://www.runsonwhat.com/reverse/gtm) | Analytics | Website code | | | [New Relic](https://www.runsonwhat.com/reverse/newrelic) | Monitoring | Website code | | ## Go-to-market | Tool | Category | Evidence | Since | |---|---|---|---| | [WordPress](https://www.runsonwhat.com/reverse/wordpress) | Website & CMS | Website code | | | [Yoast SEO](https://www.runsonwhat.com/reverse/yoast) | Website & CMS | Website code | | | [Microsoft Ads](https://www.runsonwhat.com/reverse/bing-ads) | Ads & Pixels | Website code | | | [Mailchimp](https://www.runsonwhat.com/reverse/mailchimp) | Marketing | Email records, Website code | | | [Brevo](https://www.runsonwhat.com/reverse/brevo) | Marketing | DNS verification records | | ## Company Ops | Tool | Category | Evidence | Since | |---|---|---|---| | [Microsoft 365](https://www.runsonwhat.com/reverse/microsoft-365) | Workspace | Email records, Website code | | | [SendGrid](https://www.runsonwhat.com/reverse/sendgrid) | Email Delivery | Email records | | | [Apple Business](https://www.runsonwhat.com/reverse/apple) | Workspace | DNS verification records | | | [Amazon SES](https://www.runsonwhat.com/reverse/ses) | Email Delivery | DNS verification records | | | [Exclaimer](https://www.runsonwhat.com/reverse/exclaimer) | Workspace | Email records | | | [dmarcian](https://www.runsonwhat.com/reverse/dmarcian) | Security & Compliance | Email records | | | [iubenda](https://www.runsonwhat.com/reverse/iubenda) | Security & Compliance | Website code | | | [Canva](https://www.runsonwhat.com/reverse/canva) | Collaboration | DNS verification records | | | [AuthSMTP](https://www.runsonwhat.com/reverse/authsmtp) | Email Delivery | Email records | | ## FAQ ### What tools does Sei – Stockholm Environment Institute use? As of October 2026, runsonwhat has found 21 tools at Sei – Stockholm Environment Institute (sei.org) in public records. Edge & Hosting: Cloudflare. Application: jQuery and Anthropic. Data & Observability: Google Tag Manager and New Relic. Go-to-market: WordPress, Yoast SEO and Microsoft Ads. Company Ops: Microsoft 365, SendGrid and Apple Business. Last checked October 15, 2026. ### What email provider does Sei – Stockholm Environment Institute use? Sei – Stockholm Environment Institute uses Microsoft 365 for email and office software, alongside Apple Business and Exclaimer, according to runsonwhat (October 2026). runsonwhat found Microsoft 365 through email records that authorize Microsoft 365 and code on sei.org. Microsoft 365 is used by 701,710 companies runsonwhat tracks. ### What analytics tools does Sei – Stockholm Environment Institute use? Sei – Stockholm Environment Institute uses Google Tag Manager for analytics, according to runsonwhat (October 2026). runsonwhat found Google Tag Manager through Google Tag Manager code on sei.org. Google Tag Manager is used by 489,238 companies runsonwhat tracks. ### What is Sei – Stockholm Environment Institute's website built with? Sei – Stockholm Environment Institute uses WordPress for its website, alongside Yoast SEO, according to runsonwhat (October 2026). runsonwhat found WordPress through WordPress code on sei.org. WordPress is used by 582,767 companies runsonwhat tracks. ### What marketing software does Sei – Stockholm Environment Institute use? Sei – Stockholm Environment Institute uses Mailchimp for marketing, alongside Brevo, according to runsonwhat (October 2026). runsonwhat found Mailchimp through email records that authorize Mailchimp and code on sei.org. Mailchimp is used by 113,225 companies runsonwhat tracks. ### What monitoring tools does Sei – Stockholm Environment Institute use? Sei – Stockholm Environment Institute uses New Relic for monitoring, according to runsonwhat (October 2026). runsonwhat found New Relic through New Relic code on sei.org. New Relic is used by 16,615 companies runsonwhat tracks. ### Does Sei – Stockholm Environment Institute use jQuery? Yes. runsonwhat found jQuery at Sei – Stockholm Environment Institute through jQuery code on sei.org. jQuery is a Frontend tool used by 897,845 companies runsonwhat tracks. ### Does Sei – Stockholm Environment Institute use AI tools? Yes. runsonwhat has found Anthropic at Sei – Stockholm Environment Institute; Anthropic, for example, through a DNS verification record for Anthropic. AI services called only from servers leave no public trace, so Sei – Stockholm Environment Institute may use more AI tools than these. ### Which companies have a tech stack similar to Sei – Stockholm Environment Institute's? The companies with the stacks most like Sei – Stockholm Environment Institute's are The Block Logistics, Selection Lab, Nederlandse Organisatie Docenten EHBO and Restoria, according to runsonwhat (October 2026). Each shares 3 to 9 tools with Sei – Stockholm Environment Institute, and rare tools count for more than common ones like Google Workspace, so the match reflects real stack choices. ### How does runsonwhat know what Sei – Stockholm Environment Institute uses? runsonwhat reads public records only. Of the 21 tools at Sei – Stockholm Environment Institute, 7 were found through code on sei.org, 7 through DNS records, 6 through email records and 1 through website configuration files. A tool is listed only when a direct record backs it up; DNS is rechecked weekly and sei.org about monthly. --- Source: runsonwhat, https://www.runsonwhat.com/company/sei.org (updated October 2026). Counts are companies with direct public evidence of the tool (DNS records, certificates, website code, a real-browser crawl, subprocessor lists), so they are lower bounds. Methodology: https://www.runsonwhat.com/methodology.