# What does SIWI use? SIWI (siwi.org) shows public evidence of 23 tools, according to runsonwhat (last checked 2026-11-03). - Industry: Think Tanks - Size: 51–200 employees - Based in: Stockholm, Sweden - Founded: 1991 - LinkedIn: https://www.linkedin.com/company/stockholm-international-water-institute ## Edge & Hosting | Tool | Category | Evidence | Since | |---|---|---|---| | [Vercel](https://www.runsonwhat.com/reverse/vercel) | Hosting & Cloud | Custom domain, DNS records, Website code | | | [Microsoft Azure](https://www.runsonwhat.com/reverse/azure) | Hosting & Cloud | DNS records, Website code | | ## Application | Tool | Category | Evidence | Since | |---|---|---|---| | [Google Fonts](https://www.runsonwhat.com/reverse/google-fonts) | Media & UI | Website code | | | [YouTube](https://www.runsonwhat.com/reverse/youtube) | Media & UI | Website code | | | [React](https://www.runsonwhat.com/reverse/react) | Frontend | Website code | | | [Tailwind CSS](https://www.runsonwhat.com/reverse/tailwind) | Frontend | Website code | | | [Next.js](https://www.runsonwhat.com/reverse/nextjs) | Frontend | Website code | | ## Data & Observability | Tool | Category | Evidence | Since | |---|---|---|---| | [Google Analytics](https://www.runsonwhat.com/reverse/ga) | Analytics | Website code | | | [Google Tag Manager](https://www.runsonwhat.com/reverse/gtm) | Analytics | Website code | | ## Go-to-market | Tool | Category | Evidence | Since | |---|---|---|---| | [WordPress](https://www.runsonwhat.com/reverse/wordpress) | Website & CMS | Website code | | | [Google Ads](https://www.runsonwhat.com/reverse/google-ads) | Ads & Pixels | Website code | | | [Microsoft Ads](https://www.runsonwhat.com/reverse/bing-ads) | Ads & Pixels | Website code | | | [Mailchimp](https://www.runsonwhat.com/reverse/mailchimp) | Marketing | Website code | | | [Zendesk](https://www.runsonwhat.com/reverse/zendesk) | Support & Docs | Email records, Website code | | ## Company Ops | Tool | Category | Evidence | Since | |---|---|---|---| | [Microsoft 365](https://www.runsonwhat.com/reverse/microsoft-365) | Workspace | Email records, DNS verification 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 | | | [Mailchimp Transactional](https://www.runsonwhat.com/reverse/mandrill) | Email Delivery | Email records | | | [CookieYes](https://www.runsonwhat.com/reverse/cookieyes) | Security & Compliance | Website code | | | [Zoom](https://www.runsonwhat.com/reverse/zoom) | Collaboration | DNS verification records | | | [Teamtailor](https://www.runsonwhat.com/reverse/teamtailor) | People & HR | Custom domain | 2023-03 | ## FAQ ### What tools does SIWI use? As of November 2026, runsonwhat has found 23 tools at SIWI (siwi.org) in public records. Edge & Hosting: Vercel and Microsoft Azure. Application: Google Fonts, YouTube and React. Data & Observability: Google Analytics and Google Tag Manager. Go-to-market: WordPress, Google Ads and Microsoft Ads. Company Ops: Microsoft 365, SendGrid and Apple Business. Last checked November 3, 2026. ### What cloud does SIWI run on? SIWI uses Vercel for hosting and cloud infrastructure, alongside Microsoft Azure, according to runsonwhat (November 2026). runsonwhat found Vercel through a subdomain that points at Vercel and DNS records. Vercel is used by 52,181 companies runsonwhat tracks. ### What email provider does SIWI use? SIWI uses Microsoft 365 for email and office software, alongside Apple Business, according to runsonwhat (November 2026). runsonwhat found Microsoft 365 through email records that authorize Microsoft 365 and a DNS verification record. Microsoft 365 is used by 727,138 companies runsonwhat tracks. ### What does SIWI use for customer support? SIWI uses Zendesk for customer support and documentation, according to runsonwhat (November 2026). runsonwhat found Zendesk through email records that authorize Zendesk and code on siwi.org. Zendesk is used by 43,316 companies runsonwhat tracks. ### What analytics tools does SIWI use? SIWI uses Google Analytics for analytics, alongside Google Tag Manager, according to runsonwhat (November 2026). runsonwhat found Google Analytics through Google Analytics code on siwi.org. Google Analytics is used by 905,620 companies runsonwhat tracks. ### What is SIWI's website built with? SIWI uses WordPress for its website, according to runsonwhat (November 2026). runsonwhat found WordPress through WordPress code on siwi.org. WordPress is used by 607,166 companies runsonwhat tracks. ### How long has SIWI used Teamtailor? SIWI has used Teamtailor since at least March 2023, going by the first public certificate of the siwi.org subdomain that points at Teamtailor. ### Does SIWI use Google Fonts? Yes. runsonwhat found Google Fonts at SIWI through Google Fonts code on siwi.org. Google Fonts is a Media & UI tool used by 825,733 companies runsonwhat tracks. ### Which companies have a tech stack similar to SIWI's? The companies with the stacks most like SIWI's are Namene, YAVICA, Teamcubate and Puma Capital Group, according to runsonwhat (November 2026). Each shares 7 to 9 tools with SIWI, and rare tools count for more than common ones like Google Workspace, so the match reflects real stack choices. ### How does runsonwhat know what SIWI uses? runsonwhat reads public records only. Of the 23 tools at SIWI, 12 were found through code on siwi.org, 4 through DNS records, 4 through email records, 2 through subdomains that point at the vendor and 1 through website configuration files. A tool is listed only when a direct record backs it up; DNS is rechecked weekly and siwi.org about monthly. --- Source: runsonwhat, https://www.runsonwhat.com/company/siwi.org (updated November 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.