# What does Circulee use? Circulee (circulee.com) shows public evidence of 21 tools, according to runsonwhat (last checked 2026-10-31). - Industry: IT Services - Size: 11–50 employees - Based in: Berlin, Germany - Founded: 2021 - LinkedIn: https://www.linkedin.com/company/circulee ## Edge & Hosting | Tool | Category | Evidence | Since | |---|---|---|---| | [Amazon Web Services](https://www.runsonwhat.com/reverse/aws) | Hosting & Cloud | Website code | | | [Amazon Route 53](https://www.runsonwhat.com/reverse/route53) | DNS | DNS records | | | [Heroku](https://www.runsonwhat.com/reverse/heroku) | Hosting & Cloud | Custom domain | | ## Application | Tool | Category | Evidence | Since | |---|---|---|---| | [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 | | | [Anthropic](https://www.runsonwhat.com/reverse/anthropic) | AI | DNS verification records | | ## 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 | |---|---|---|---| | [Google Ads](https://www.runsonwhat.com/reverse/google-ads) | Ads & Pixels | Website code | | | [LinkedIn Insight Tag](https://www.runsonwhat.com/reverse/linkedin-insight) | Ads & Pixels | Website code | | | [Microsoft Ads](https://www.runsonwhat.com/reverse/bing-ads) | Ads & Pixels | Website code | | | [Shopify](https://www.runsonwhat.com/reverse/shopify) | Website & CMS | Website code | | | [Zendesk](https://www.runsonwhat.com/reverse/zendesk) | Support & Docs | Custom domain, Email records, Website code | | | [Apollo.io](https://www.runsonwhat.com/reverse/apollo) | Sales & CRM | Website code | | | [Trusted Shops](https://www.runsonwhat.com/reverse/trusted-shops) | Marketing | Website code | | ## Company Ops | Tool | Category | Evidence | Since | |---|---|---|---| | [Microsoft 365](https://www.runsonwhat.com/reverse/microsoft-365) | Workspace | DNS verification records, Email records, Website code | | | [SendGrid](https://www.runsonwhat.com/reverse/sendgrid) | Email Delivery | Email records | | | [Amazon SES](https://www.runsonwhat.com/reverse/ses) | Email Delivery | Email records, Website code | | | [Usercentrics](https://www.runsonwhat.com/reverse/usercentrics) | Security & Compliance | Website code | | ## FAQ ### What tools does Circulee use? As of November 2026, runsonwhat has found 21 tools at Circulee (circulee.com) in public records. Edge & Hosting: Amazon Web Services, Amazon Route 53 and Heroku. Application: React, Tailwind CSS and Next.js. Data & Observability: Google Analytics and Google Tag Manager. Go-to-market: Google Ads, LinkedIn Insight Tag and Microsoft Ads. Company Ops: Microsoft 365, SendGrid and Amazon SES. Last checked October 31, 2026. ### What cloud does Circulee run on? Circulee uses Amazon Web Services for hosting and cloud infrastructure, alongside Heroku, according to runsonwhat (November 2026). runsonwhat found Amazon Web Services through Amazon Web Services code on circulee.com. Amazon Web Services is used by 146,956 companies runsonwhat tracks. ### What sales tools does Circulee use? The sales tools runsonwhat has found at Circulee are Apollo.io (November 2026); no CRM shows up in Circulee's public records. runsonwhat found Apollo.io through Apollo.io code on circulee.com. Apollo.io is used by 11,498 companies runsonwhat tracks. ### What email provider does Circulee use? Circulee uses Microsoft 365 for email and office software, according to runsonwhat (November 2026). runsonwhat found Microsoft 365 through a DNS verification record for Microsoft 365 and email records. Microsoft 365 is used by 722,463 companies runsonwhat tracks. ### What does Circulee use for customer support? Circulee uses Zendesk for customer support and documentation, according to runsonwhat (November 2026). runsonwhat found Zendesk through a subdomain that points at Zendesk and email records. Zendesk is used by 43,090 companies runsonwhat tracks. ### What analytics tools does Circulee use? Circulee uses Google Analytics for analytics, alongside Google Tag Manager, according to runsonwhat (November 2026). runsonwhat found Google Analytics through Google Analytics code on circulee.com. Google Analytics is used by 906,183 companies runsonwhat tracks. ### Does Circulee use Google Ads? Yes. runsonwhat found Google Ads at Circulee through Google Ads code on circulee.com. Google Ads is a Ads & Pixels tool used by 541,498 companies runsonwhat tracks. ### Does Circulee use AI tools? Yes. runsonwhat has found Anthropic at Circulee; Anthropic, for example, through a DNS verification record for Anthropic. AI services called only from servers leave no public trace, so Circulee may use more AI tools than these. ### Which companies have a tech stack similar to Circulee's? The companies with the stacks most like Circulee's are Textil-Großhandel, nuud, KATE & KON - Fine Wine and Fancy Food and Variance Auto, according to runsonwhat (November 2026). Each shares 5 to 8 tools with Circulee, and rare tools count for more than common ones like Google Workspace, so the match reflects real stack choices. ### How does runsonwhat know what Circulee uses? runsonwhat reads public records only. Of the 21 tools at Circulee, 13 were found through code on circulee.com, 4 through DNS records, 2 through email records and 2 through subdomains that point at the vendor. A tool is listed only when a direct record backs it up; DNS is rechecked weekly and circulee.com about monthly. --- Source: runsonwhat, https://www.runsonwhat.com/company/circulee.com (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.