# What does Celus use? Celus (celus.io) shows public evidence of 34 tools, according to runsonwhat (last checked 2026-10-26). - Industry: Software - Size: 51–200 employees - Based in: München, Germany - Founded: 2018 - LinkedIn: https://www.linkedin.com/company/celus ## Edge & Hosting | Tool | Category | Evidence | Since | |---|---|---|---| | [Cloudflare](https://www.runsonwhat.com/reverse/cloudflare) | CDN & Edge | Website code | | | [Amazon Web Services](https://www.runsonwhat.com/reverse/aws) | Hosting & Cloud | Custom domain, Website code | 2021-11 | | [Amazon Route 53](https://www.runsonwhat.com/reverse/route53) | DNS | DNS records | | | [Amazon CloudFront](https://www.runsonwhat.com/reverse/cloudfront) | CDN & Edge | Custom domain | 2020-04 | ## Application | Tool | Category | Evidence | Since | |---|---|---|---| | [Google Fonts](https://www.runsonwhat.com/reverse/google-fonts) | Media & UI | Website code | | | [React](https://www.runsonwhat.com/reverse/react) | 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 | | | [Hotjar](https://www.runsonwhat.com/reverse/hotjar) | Analytics | Website code | | | [Matomo](https://www.runsonwhat.com/reverse/matomo) | Analytics | Website code | | | [Atlassian Statuspage](https://www.runsonwhat.com/reverse/statuspage) | Monitoring | Custom domain | 2021-06 | ## 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 | | | [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 | | | [HubSpot](https://www.runsonwhat.com/reverse/hubspot) | Sales & CRM | Custom domain, Email records, Website code | 2020-09 | | [HubSpot CMS](https://www.runsonwhat.com/reverse/hubspot-cms) | Website & CMS | Custom domain | 2020-09 | | [ZoomInfo](https://www.runsonwhat.com/reverse/zoominfo) | Sales & CRM | Website code | | | [Framer](https://www.runsonwhat.com/reverse/framer) | Website & CMS | Custom domain, Website code | | ## Company Ops | Tool | Category | Evidence | Since | |---|---|---|---| | [Microsoft 365](https://www.runsonwhat.com/reverse/microsoft-365) | Workspace | Email records, Website code | | | [Apple Business](https://www.runsonwhat.com/reverse/apple) | Workspace | DNS verification records | | | [Cookiebot](https://www.runsonwhat.com/reverse/cookiebot) | Security & Compliance | Website code | | | [Atlassian](https://www.runsonwhat.com/reverse/atlassian) | Dev Tools | DNS verification records | | | [Mailgun](https://www.runsonwhat.com/reverse/mailgun) | Email Delivery | Custom domain, Email records, Website code | | | [Mailjet](https://www.runsonwhat.com/reverse/mailjet) | Email Delivery | Email records, Website code | | | [Zoom](https://www.runsonwhat.com/reverse/zoom) | Collaboration | DNS verification records | | | [Figma](https://www.runsonwhat.com/reverse/figma) | Collaboration | DNS verification records | | | [Vanta](https://www.runsonwhat.com/reverse/vanta) | Security & Compliance | Custom domain | 2024-08 | | [Uber for Business](https://www.runsonwhat.com/reverse/uber) | Finance & Legal | DNS verification records | | | [Personio](https://www.runsonwhat.com/reverse/personio) | People & HR | Website code | | | [ProdPad](https://www.runsonwhat.com/reverse/prodpad) | Collaboration | DNS verification records | | ## FAQ ### What tools does Celus use? As of October 2026, runsonwhat has found 34 tools at Celus (celus.io) in public records. Edge & Hosting: Cloudflare, Amazon Web Services and Amazon Route 53. Application: Google Fonts, React and Anthropic. Data & Observability: Google Analytics, Google Tag Manager and Hotjar. Go-to-market: Google Ads, Meta Pixel and LinkedIn Insight Tag. Company Ops: Microsoft 365, Apple Business and Cookiebot. Last checked October 26, 2026. ### What cloud does Celus run on? Celus uses Amazon Web Services for hosting and cloud infrastructure, according to runsonwhat (October 2026). runsonwhat found Amazon Web Services through a subdomain that points at Amazon Web Services and code on celus.io, and Celus has used it since at least November 2021. Amazon Web Services is used by 146,183 companies runsonwhat tracks. ### What CRM does Celus use? Celus uses HubSpot for its CRM, alongside ZoomInfo, according to runsonwhat (October 2026). runsonwhat found HubSpot through a subdomain that points at HubSpot and email records, and Celus has used it since at least September 2020. HubSpot is used by 95,498 companies runsonwhat tracks. ### What email provider does Celus use? Celus uses Microsoft 365 for email and office software, alongside Apple Business, according to runsonwhat (October 2026). runsonwhat found Microsoft 365 through email records that authorize Microsoft 365 and code on celus.io. Microsoft 365 is used by 715,543 companies runsonwhat tracks. ### What analytics tools does Celus use? Celus uses Google Analytics for analytics, alongside Google Tag Manager, Hotjar and Matomo, according to runsonwhat (October 2026). runsonwhat found Google Analytics through Google Analytics code on celus.io. Google Analytics is used by 899,099 companies runsonwhat tracks. ### What is Celus's website built with? Celus uses HubSpot CMS for its website, alongside Framer, according to runsonwhat (October 2026). runsonwhat found HubSpot CMS through a subdomain that points at HubSpot CMS, and Celus has used it since at least September 2020. HubSpot CMS is used by 33,501 companies runsonwhat tracks. ### How long has Celus used Amazon CloudFront? Celus has used Amazon CloudFront since at least April 2020, going by the first public certificate of the celus.io subdomain that points at Amazon CloudFront. Other long-running tools at Celus include HubSpot (since September 2020), HubSpot CMS (since September 2020) and Atlassian Statuspage (since June 2021). ### Does Celus use Google Fonts? Yes. runsonwhat found Google Fonts at Celus through Google Fonts code on celus.io. Google Fonts is a Media & UI tool used by 820,774 companies runsonwhat tracks. ### Does Celus use AI tools? Yes. runsonwhat has found Anthropic at Celus; Anthropic, for example, through a DNS verification record for Anthropic. AI services called only from servers leave no public trace, so Celus may use more AI tools than these. ### Which companies have a tech stack similar to Celus's? The companies with the stacks most like Celus' are Kandji, Cropster, Alphatax and Aptem, according to runsonwhat (October 2026). Each shares 6 to 24 tools with Celus, and rare tools count for more than common ones like Google Workspace, so the match reflects real stack choices. ### How does runsonwhat know what Celus uses? runsonwhat reads public records only. Of the 34 tools at Celus, 14 were found through code on celus.io, 9 through DNS records, 8 through subdomains that point at the vendor, 2 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 celus.io about monthly. --- Source: runsonwhat, https://www.runsonwhat.com/company/celus.io (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.