# What does CELSIUS use? CELSIUS (celsius.com) shows public evidence of 30 tools, according to runsonwhat (last checked 2026-10-20). ## Edge & Hosting | Tool | Category | Evidence | Since | |---|---|---|---| | [Cloudflare](https://www.runsonwhat.com/reverse/cloudflare) | CDN & Edge | Website code | | | [WP Engine](https://www.runsonwhat.com/reverse/wpengine) | Hosting & Cloud | Custom domain, 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 | | | [YouTube](https://www.runsonwhat.com/reverse/youtube) | Media & UI | Website code | | | [GSAP](https://www.runsonwhat.com/reverse/gsap) | Media & UI | Website code | | | [Anthropic](https://www.runsonwhat.com/reverse/anthropic) | AI | DNS verification records | | | [OpenAI](https://www.runsonwhat.com/reverse/openai) | 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 | |---|---|---|---| | [WordPress](https://www.runsonwhat.com/reverse/wordpress) | Website & CMS | Website code | | | [Google Ads](https://www.runsonwhat.com/reverse/google-ads) | Ads & Pixels | Website code | | | [Meta Pixel](https://www.runsonwhat.com/reverse/meta-pixel) | Ads & Pixels | DNS verification records, Website code | | | [Yoast SEO](https://www.runsonwhat.com/reverse/yoast) | Website & CMS | Website code | | | [Mailchimp](https://www.runsonwhat.com/reverse/mailchimp) | Marketing | Email records | | | [Salesforce](https://www.runsonwhat.com/reverse/salesforce) | Sales & CRM | Email records | | | [Freshdesk](https://www.runsonwhat.com/reverse/freshdesk) | Support & Docs | Email records | | ## Company Ops | Tool | Category | Evidence | Since | |---|---|---|---| | [Microsoft 365](https://www.runsonwhat.com/reverse/microsoft-365) | Workspace | DNS verification records, Email records | | | [SendGrid](https://www.runsonwhat.com/reverse/sendgrid) | Email Delivery | Email records | | | [Apple Business](https://www.runsonwhat.com/reverse/apple) | Workspace | DNS verification records | | | [Atlassian](https://www.runsonwhat.com/reverse/atlassian) | Dev Tools | DNS verification records | | | [Mailchimp Transactional](https://www.runsonwhat.com/reverse/mandrill) | Email Delivery | Email records | | | [GlobalSign](https://www.runsonwhat.com/reverse/globalsign) | Security & Compliance | DNS verification records | | | [OneTrust](https://www.runsonwhat.com/reverse/onetrust) | Security & Compliance | Website code | | | [Adobe](https://www.runsonwhat.com/reverse/adobe) | Collaboration | DNS verification records | | | [UserWay](https://www.runsonwhat.com/reverse/userway) | Security & Compliance | Website code | | | [Barracuda](https://www.runsonwhat.com/reverse/barracuda) | Security & Compliance | Email records | | | [Duo](https://www.runsonwhat.com/reverse/duo) | Security & Compliance | DNS verification records | | | [UKG Pro](https://www.runsonwhat.com/reverse/ukg) | People & HR | Email records | | ## FAQ ### What tools does CELSIUS use? As of October 2026, runsonwhat has found 30 tools at CELSIUS (celsius.com) in public records. Edge & Hosting: Cloudflare and WP Engine. Application: jQuery, Vimeo and YouTube. Data & Observability: Google Analytics and Google Tag Manager. Go-to-market: WordPress, Google Ads and Meta Pixel. Company Ops: Microsoft 365, SendGrid and Apple Business. Last checked October 20, 2026. ### What cloud does CELSIUS run on? CELSIUS uses WP Engine for hosting and cloud infrastructure, according to runsonwhat (October 2026). runsonwhat found WP Engine through a subdomain that points at WP Engine and code on celsius.com. WP Engine is used by 50,896 companies runsonwhat tracks. ### What CRM does CELSIUS use? CELSIUS uses Salesforce for its CRM, according to runsonwhat (October 2026). runsonwhat found Salesforce through email records that authorize Salesforce. Salesforce is used by 33,788 companies runsonwhat tracks. ### What email provider does CELSIUS use? CELSIUS uses Microsoft 365 for email and office software, alongside Apple Business, according to runsonwhat (October 2026). runsonwhat found Microsoft 365 through a DNS verification record for Microsoft 365 and email records. Microsoft 365 is used by 706,403 companies runsonwhat tracks. ### What does CELSIUS use for customer support? CELSIUS uses Freshdesk for customer support and documentation, according to runsonwhat (October 2026). runsonwhat found Freshdesk through email records that authorize Freshdesk. Freshdesk is used by 12,304 companies runsonwhat tracks. ### What analytics tools does CELSIUS use? CELSIUS uses Google Analytics for analytics, alongside Google Tag Manager, according to runsonwhat (October 2026). runsonwhat found Google Analytics through Google Analytics code on celsius.com. Google Analytics is used by 864,726 companies runsonwhat tracks. ### Does CELSIUS use jQuery? Yes. runsonwhat found jQuery at CELSIUS through jQuery code on celsius.com. jQuery is a Frontend tool used by 905,854 companies runsonwhat tracks. ### Does CELSIUS use AI tools? Yes. runsonwhat has found Anthropic and OpenAI at CELSIUS; Anthropic, for example, through a DNS verification record for Anthropic. AI services called only from servers leave no public trace, so CELSIUS may use more AI tools than these. ### Which companies have a tech stack similar to CELSIUS's? The companies with the stacks most like CELSIUS' are Romet, Infirmary Health, Bhhs Ambassador Real Estate and Fleet Farm, according to runsonwhat (October 2026). Each shares 6 to 15 tools with CELSIUS, and rare tools count for more than common ones like Google Workspace, so the match reflects real stack choices. ### How does runsonwhat know what CELSIUS uses? runsonwhat reads public records only. Of the 30 tools at CELSIUS, 12 were found through code on celsius.com, 10 through DNS records, 7 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 celsius.com about monthly. --- Source: runsonwhat, https://www.runsonwhat.com/company/celsius.com (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.