# What does Duuo use? Duuo (duuo.dk) shows public evidence of 21 tools, according to runsonwhat (last checked 2026-10-20). - Industry: Facilities Services - Size: 51–200 employees - Based in: Copenhagen, Denmark - Founded: 2017 - LinkedIn: https://www.linkedin.com/company/duuo ## 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 | | | [Vimeo](https://www.runsonwhat.com/reverse/vimeo) | Media & UI | Website code | | | [Adobe Fonts](https://www.runsonwhat.com/reverse/adobe-fonts) | Media & UI | Website code | | | [OpenAI](https://www.runsonwhat.com/reverse/openai) | AI | DNS verification records | | | [Embedly](https://www.runsonwhat.com/reverse/embedly) | Media & UI | 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 | | | [Intellimize](https://www.runsonwhat.com/reverse/intellimize) | Flags & Experiments | Website code | | ## Go-to-market | Tool | Category | Evidence | Since | |---|---|---|---| | [Google Ads](https://www.runsonwhat.com/reverse/google-ads) | Ads & Pixels | Website code | | | [Meta Pixel](https://www.runsonwhat.com/reverse/meta-pixel) | Ads & Pixels | Website code | | | [Microsoft Ads](https://www.runsonwhat.com/reverse/bing-ads) | Ads & Pixels | Website code | | | [LinkedIn Insight Tag](https://www.runsonwhat.com/reverse/linkedin-insight) | Ads & Pixels | Website code | | | [HubSpot](https://www.runsonwhat.com/reverse/hubspot) | Sales & CRM | Email records, Website code | | | [Webflow](https://www.runsonwhat.com/reverse/webflow) | Website & CMS | Custom domain, Website code | | | [Ahrefs](https://www.runsonwhat.com/reverse/ahrefs) | Marketing | Website code | | | [Elfsight](https://www.runsonwhat.com/reverse/elfsight) | Marketing | Website code | | ## Company Ops | Tool | Category | Evidence | Since | |---|---|---|---| | [Microsoft 365](https://www.runsonwhat.com/reverse/microsoft-365) | Workspace | Email records, Website code | | | [Cookiebot](https://www.runsonwhat.com/reverse/cookiebot) | Security & Compliance | Website code | | | [Canva](https://www.runsonwhat.com/reverse/canva) | Collaboration | DNS verification records | | ## FAQ ### What tools does Duuo use? As of October 2026, runsonwhat has found 21 tools at Duuo (duuo.dk) in public records. Edge & Hosting: Cloudflare. Application: jQuery, Vimeo and Adobe Fonts. Data & Observability: Google Analytics, Google Tag Manager and Intellimize. Go-to-market: Google Ads, Meta Pixel and Microsoft Ads. Company Ops: Microsoft 365, Cookiebot and Canva. Last checked October 20, 2026. ### What CRM does Duuo use? Duuo uses HubSpot for its CRM, according to runsonwhat (October 2026). runsonwhat found HubSpot through email records that authorize HubSpot and code on duuo.dk. HubSpot is used by 93,800 companies runsonwhat tracks. ### What email provider does Duuo use? Duuo uses Microsoft 365 for email and office software, according to runsonwhat (October 2026). runsonwhat found Microsoft 365 through email records that authorize Microsoft 365 and code on duuo.dk. Microsoft 365 is used by 710,104 companies runsonwhat tracks. ### What analytics tools does Duuo use? Duuo uses Google Analytics for analytics, alongside Google Tag Manager, according to runsonwhat (October 2026). runsonwhat found Google Analytics through Google Analytics code on duuo.dk. Google Analytics is used by 877,185 companies runsonwhat tracks. ### What is Duuo's website built with? Duuo uses Webflow for its website, according to runsonwhat (October 2026). runsonwhat found Webflow through a subdomain that points at Webflow and code on duuo.dk. Webflow is used by 34,814 companies runsonwhat tracks. ### What marketing software does Duuo use? Duuo uses Ahrefs for marketing, alongside Elfsight, according to runsonwhat (October 2026). runsonwhat found Ahrefs through Ahrefs code on duuo.dk. Ahrefs is used by 23,471 companies runsonwhat tracks. ### Does Duuo use jQuery? Yes. runsonwhat found jQuery at Duuo through jQuery code on duuo.dk. jQuery is a Frontend tool used by 914,181 companies runsonwhat tracks. ### Does Duuo use AI tools? Yes. runsonwhat has found OpenAI at Duuo; OpenAI, for example, through a DNS verification record for OpenAI. AI services called only from servers leave no public trace, so Duuo may use more AI tools than these. ### Which companies have a tech stack similar to Duuo's? The companies with the stacks most like Duuo's are General Catalyst, PlanB., Myriad360 and Shift Collab, according to runsonwhat (October 2026). Each shares 5 to 13 tools with Duuo, and rare tools count for more than common ones like Google Workspace, so the match reflects real stack choices. ### How does runsonwhat know what Duuo uses? runsonwhat reads public records only. Of the 21 tools at Duuo, 14 were found through code on duuo.dk, 4 through DNS records, 2 through email records and 1 through subdomains that point at the vendor. A tool is listed only when a direct record backs it up; DNS is rechecked weekly and duuo.dk about monthly. --- Source: runsonwhat, https://www.runsonwhat.com/company/duuo.dk (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.