# What does Celcat use? Celcat (celcat.com) shows public evidence of 26 tools, according to runsonwhat (last checked 2026-10-20). - Industry: Education Management - Size: 11–50 employees - Based in: Coleshill, United Kingdom - Founded: 1979 - LinkedIn: https://www.linkedin.com/company/celcat ## 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 | | ## Application | Tool | Category | Evidence | Since | |---|---|---|---| | [jQuery](https://www.runsonwhat.com/reverse/jquery) | Frontend | Website code | | | [Google Fonts](https://www.runsonwhat.com/reverse/google-fonts) | 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 | | | [MongoDB Atlas](https://www.runsonwhat.com/reverse/mongodb) | Backend & Database | DNS verification records | | ## Go-to-market | Tool | Category | Evidence | Since | |---|---|---|---| | [WordPress](https://www.runsonwhat.com/reverse/wordpress) | Website & CMS | 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 | Custom domain | | | [Pardot](https://www.runsonwhat.com/reverse/pardot) | Marketing | Custom domain | | | [ZoomInfo](https://www.runsonwhat.com/reverse/zoominfo) | Sales & CRM | Website code | | | [Freshdesk](https://www.runsonwhat.com/reverse/freshdesk) | Support & Docs | Custom domain, Email records | | | [Salesloft](https://www.runsonwhat.com/reverse/salesloft) | Sales & CRM | 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 | | | [Google Workspace](https://www.runsonwhat.com/reverse/google-workspace) | Workspace | DNS verification records | | | [reCAPTCHA](https://www.runsonwhat.com/reverse/recaptcha) | Security & Compliance | Website code | | | [SendGrid](https://www.runsonwhat.com/reverse/sendgrid) | Email Delivery | Custom domain | | | [Apple Business](https://www.runsonwhat.com/reverse/apple) | Workspace | DNS verification records | | | [Atlassian](https://www.runsonwhat.com/reverse/atlassian) | Dev Tools | DNS verification records | | | [Amazon SES](https://www.runsonwhat.com/reverse/ses) | Email Delivery | Email records, Website code | | | [Bitwarden](https://www.runsonwhat.com/reverse/bitwarden) | Security & Compliance | DNS verification records | | | [Cursor](https://www.runsonwhat.com/reverse/cursor) | Dev Tools | DNS verification records | | | [AuthSMTP](https://www.runsonwhat.com/reverse/authsmtp) | Email Delivery | Email records | | ## Recent changes at Celcat - 2026-10-20: started using [Salesforce](https://www.runsonwhat.com/reverse/salesforce) ## FAQ ### What tools does Celcat use? As of October 2026, runsonwhat has found 26 tools at Celcat (celcat.com) in public records. Edge & Hosting: Amazon Web Services and Amazon Route 53. Application: jQuery, Google Fonts and Anthropic. Go-to-market: WordPress, Yoast SEO and Mailchimp. Company Ops: Microsoft 365, Google Workspace and reCAPTCHA. Last checked October 20, 2026. ### What cloud does Celcat run on? Celcat uses Amazon Web Services for hosting and cloud infrastructure, according to runsonwhat (October 2026). runsonwhat found Amazon Web Services through Amazon Web Services code on celcat.com. Amazon Web Services is used by 145,298 companies runsonwhat tracks. ### What CRM does Celcat use? Celcat uses Salesforce for its CRM, alongside ZoomInfo and Salesloft, according to runsonwhat (October 2026). runsonwhat found Salesforce through a subdomain that points at Salesforce. Salesforce is used by 33,798 companies runsonwhat tracks. ### What email provider does Celcat use? Celcat uses Microsoft 365 for email and office software, alongside Google Workspace and Apple Business, according to runsonwhat (October 2026). runsonwhat found Microsoft 365 through email records that authorize Microsoft 365 and a DNS verification record. Microsoft 365 is used by 706,433 companies runsonwhat tracks. ### What does Celcat use for customer support? Celcat uses Freshdesk for customer support and documentation, according to runsonwhat (October 2026). runsonwhat found Freshdesk through a subdomain that points at Freshdesk and email records. Freshdesk is used by 12,317 companies runsonwhat tracks. ### What is Celcat's website built with? Celcat uses WordPress for its website, alongside Yoast SEO, according to runsonwhat (October 2026). runsonwhat found WordPress through WordPress code on celcat.com. WordPress is used by 589,170 companies runsonwhat tracks. ### Does Celcat use jQuery? Yes. runsonwhat found jQuery at Celcat through jQuery code on celcat.com. jQuery is a Frontend tool used by 906,091 companies runsonwhat tracks. ### Does Celcat use AI tools? Yes. runsonwhat has found Anthropic and OpenAI at Celcat; Anthropic, for example, through a DNS verification record for Anthropic. AI services called only from servers leave no public trace, so Celcat may use more AI tools than these. ### Has Celcat changed tools recently? Yes. On runsonwhat's rechecks, Celcat started using Salesforce (latest on October 20, 2026). A change counts only between two checks of celcat.com done the same way. ### Which companies have a tech stack similar to Celcat's? The companies with the stacks most like Celcat's are Alpha, Wondersign, ALTR and MariaDB, according to runsonwhat (October 2026). Each shares 6 to 12 tools with Celcat, and rare tools count for more than common ones like Google Workspace, so the match reflects real stack choices. ### How does runsonwhat know what Celcat uses? runsonwhat reads public records only. Of the 26 tools at Celcat, 10 were found through DNS records, 8 through code on celcat.com, 4 through email records and 4 through subdomains that point at the vendor. A tool is listed only when a direct record backs it up; DNS is rechecked weekly and celcat.com about monthly. --- Source: runsonwhat, https://www.runsonwhat.com/company/celcat.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.