# What does The Calhoun School use? The Calhoun School (calhoun.org) shows public evidence of 25 tools, according to runsonwhat (last checked 2026-11-11). - Industry: Education Management - Size: 51–200 employees - Based in: New York, United States - Founded: 1896 - LinkedIn: https://www.linkedin.com/school/calhoun-school ## Edge & Hosting | Tool | Category | Evidence | Since | |---|---|---|---| | [Cloudflare](https://www.runsonwhat.com/reverse/cloudflare) | CDN & Edge | DNS records, Website code | | | [Google Cloud](https://www.runsonwhat.com/reverse/gcp) | Hosting & Cloud | Custom domain | | | [Fastly](https://www.runsonwhat.com/reverse/fastly) | CDN & Edge | 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 | | | [Vimeo](https://www.runsonwhat.com/reverse/vimeo) | Media & UI | Website code | | | [YouTube](https://www.runsonwhat.com/reverse/youtube) | Media & UI | Website code | | | [Google Maps](https://www.runsonwhat.com/reverse/google-maps) | Media & UI | Website code | | | [Adobe Fonts](https://www.runsonwhat.com/reverse/adobe-fonts) | Media & UI | Website code | | | [Anthropic](https://www.runsonwhat.com/reverse/anthropic) | AI | DNS verification records | | | [Firebase](https://www.runsonwhat.com/reverse/firebase) | Backend & Database | DNS records, 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 | | ## Go-to-market | Tool | Category | Evidence | Since | |---|---|---|---| | [Google Ads](https://www.runsonwhat.com/reverse/google-ads) | Ads & Pixels | Website code | | | [Weglot](https://www.runsonwhat.com/reverse/weglot) | Website & CMS | Website code | | | [Juicer](https://www.runsonwhat.com/reverse/juicer) | Marketing | Website code | | ## Company Ops | Tool | Category | Evidence | Since | |---|---|---|---| | [Microsoft 365](https://www.runsonwhat.com/reverse/microsoft-365) | Workspace | DNS verification records | | | [Google Workspace](https://www.runsonwhat.com/reverse/google-workspace) | Workspace | Email records, Website code | | | [reCAPTCHA](https://www.runsonwhat.com/reverse/recaptcha) | Security & Compliance | Website code | | | [SendGrid](https://www.runsonwhat.com/reverse/sendgrid) | Email Delivery | Email records | | | [Apple Business](https://www.runsonwhat.com/reverse/apple) | Workspace | DNS verification records | | | [Zoom](https://www.runsonwhat.com/reverse/zoom) | Collaboration | DNS verification records | | | [Termly](https://www.runsonwhat.com/reverse/termly) | Security & Compliance | Website code | | | [Jamf](https://www.runsonwhat.com/reverse/jamf) | Security & Compliance | DNS verification records | | ## Recent changes at The Calhoun School - 2026-10-19: started using [Anthropic](https://www.runsonwhat.com/reverse/anthropic) ## FAQ ### What tools does The Calhoun School use? As of November 2026, runsonwhat has found 25 tools at The Calhoun School (calhoun.org) in public records. Edge & Hosting: Cloudflare, Google Cloud and Fastly. Application: jQuery, Google Fonts and Vimeo. Data & Observability: Google Analytics and Google Tag Manager. Go-to-market: Google Ads, Weglot and Juicer. Company Ops: Microsoft 365, Google Workspace and reCAPTCHA. Last checked November 11, 2026. ### What cloud does The Calhoun School run on? The Calhoun School uses Google Cloud for hosting and cloud infrastructure, according to runsonwhat (November 2026). runsonwhat found Google Cloud through a subdomain that points at Google Cloud. Google Cloud is used by 77,782 companies runsonwhat tracks. ### What email provider does The Calhoun School use? The Calhoun School uses Microsoft 365 for email and office software, alongside Google Workspace and Apple Business, according to runsonwhat (November 2026). runsonwhat found Microsoft 365 through a DNS verification record for Microsoft 365. Microsoft 365 is used by 734,044 companies runsonwhat tracks. ### What analytics tools does The Calhoun School use? The Calhoun School uses Google Analytics for analytics, alongside Google Tag Manager, according to runsonwhat (November 2026). runsonwhat found Google Analytics through Google Analytics code on calhoun.org. Google Analytics is used by 903,904 companies runsonwhat tracks. ### What is The Calhoun School's website built with? The Calhoun School uses Weglot for its website, according to runsonwhat (November 2026). runsonwhat found Weglot through Weglot code on calhoun.org. Weglot is used by 5,596 companies runsonwhat tracks. ### What marketing software does The Calhoun School use? The Calhoun School uses Juicer for marketing, according to runsonwhat (November 2026). runsonwhat found Juicer through Juicer code on calhoun.org. Juicer is used by 2,502 companies runsonwhat tracks. ### Does The Calhoun School use jQuery? Yes. runsonwhat found jQuery at The Calhoun School through jQuery code on calhoun.org. jQuery is a Frontend tool used by 927,218 companies runsonwhat tracks. ### Does The Calhoun School use AI tools? Yes. runsonwhat has found Anthropic at The Calhoun School; Anthropic, for example, through a DNS verification record for Anthropic. AI services called only from servers leave no public trace, so The Calhoun School may use more AI tools than these. ### Has The Calhoun School changed tools recently? Yes. On runsonwhat's rechecks, The Calhoun School started using Anthropic (latest on October 19, 2026). A change counts only between two checks of calhoun.org done the same way. ### Which companies have a tech stack similar to The Calhoun School's? The companies with the stacks most like The Calhoun School's are St. David’s School, Holy Child Academy, Drexel Hill, Cardinal Spellman High School and Mountain View School District, according to runsonwhat (November 2026). Each shares 15 to 16 tools with The Calhoun School, and rare tools count for more than common ones like Google Workspace, so the match reflects real stack choices. ### How does runsonwhat know what The Calhoun School uses? runsonwhat reads public records only. Of the 25 tools at The Calhoun School, 13 were found through code on calhoun.org, 9 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 calhoun.org about monthly. --- Source: runsonwhat, https://www.runsonwhat.com/company/calhoun.org (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.