# What does FatTail use? FatTail (fattail.com) shows public evidence of 15 tools, according to runsonwhat (last checked 2026-10-19). - Industry: Internet - Size: 51–200 employees - Based in: Calabasas, United States - Founded: 2000 - LinkedIn: https://www.linkedin.com/company/fattail ## Edge & Hosting | Tool | Category | Evidence | Since | |---|---|---|---| | [Cloudflare](https://www.runsonwhat.com/reverse/cloudflare) | CDN & Edge | Website code | | | [Microsoft Azure](https://www.runsonwhat.com/reverse/azure) | Hosting & Cloud | Custom domain, DNS records, Website code | | ## Application | Tool | Category | Evidence | Since | |---|---|---|---| | [Adobe Fonts](https://www.runsonwhat.com/reverse/adobe-fonts) | Media & UI | 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 | | | [Atlassian Statuspage](https://www.runsonwhat.com/reverse/statuspage) | Monitoring | Custom domain, DNS verification records, Email records, Website code | | | [Chartbeat](https://www.runsonwhat.com/reverse/chartbeat) | 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 | | | [HubSpot](https://www.runsonwhat.com/reverse/hubspot) | Sales & CRM | Custom domain, Email records, Website code | | | [Squarespace](https://www.runsonwhat.com/reverse/squarespace) | Website & CMS | Custom domain, DNS records, Website code | | | [HubSpot CMS](https://www.runsonwhat.com/reverse/hubspot-cms) | Website & CMS | Custom domain | | ## Company Ops | Tool | Category | Evidence | Since | |---|---|---|---| | [Microsoft 365](https://www.runsonwhat.com/reverse/microsoft-365) | Workspace | Email records, Website code | | | [SendGrid](https://www.runsonwhat.com/reverse/sendgrid) | Email Delivery | Email records | | | [Red Sift OnDMARC](https://www.runsonwhat.com/reverse/redsift) | Security & Compliance | Email records | | ## Recent changes at FatTail - 2026-10-19: stopped using [Atlassian](https://www.runsonwhat.com/reverse/atlassian) - 2026-10-19: stopped using [Braintree](https://www.runsonwhat.com/reverse/braintree) - 2026-10-19: stopped using [Duo](https://www.runsonwhat.com/reverse/duo) - 2026-10-19: stopped using [Figma](https://www.runsonwhat.com/reverse/figma) - 2026-10-19: stopped using [Google Search Console](https://www.runsonwhat.com/reverse/gsc) - 2026-10-19: stopped using [KnowBe4](https://www.runsonwhat.com/reverse/knowbe4) - 2026-10-19: stopped using [Zoom](https://www.runsonwhat.com/reverse/zoom) ## FAQ ### What tools does FatTail use? As of October 2026, runsonwhat has found 15 tools at FatTail (fattail.com) in public records. Edge & Hosting: Cloudflare and Microsoft Azure. Application: Adobe Fonts. Data & Observability: Google Analytics, Google Tag Manager and Atlassian Statuspage. Go-to-market: Google Ads, LinkedIn Insight Tag and HubSpot. Company Ops: Microsoft 365, SendGrid and Red Sift OnDMARC. Last checked October 19, 2026. ### What cloud does FatTail run on? FatTail uses Microsoft Azure for hosting and cloud infrastructure, according to runsonwhat (October 2026). runsonwhat found Microsoft Azure through a subdomain that points at Microsoft Azure and DNS records. Microsoft Azure is used by 46,526 companies runsonwhat tracks. ### What CRM does FatTail use? FatTail uses HubSpot for its CRM, according to runsonwhat (October 2026). runsonwhat found HubSpot through a subdomain that points at HubSpot and email records. HubSpot is used by 93,606 companies runsonwhat tracks. ### What email provider does FatTail use? FatTail uses Microsoft 365 for email and office software, according to runsonwhat (October 2026). runsonwhat found Microsoft 365 through email records that authorize Microsoft 365 and code on fattail.com. Microsoft 365 is used by 709,020 companies runsonwhat tracks. ### What analytics tools does FatTail use? FatTail uses Google Analytics for analytics, alongside Google Tag Manager and Chartbeat, according to runsonwhat (October 2026). runsonwhat found Google Analytics through Google Analytics code on fattail.com. Google Analytics is used by 874,174 companies runsonwhat tracks. ### What is FatTail's website built with? FatTail uses Squarespace for its website, alongside HubSpot CMS, according to runsonwhat (October 2026). runsonwhat found Squarespace through a subdomain that points at Squarespace and DNS records. Squarespace is used by 33,538 companies runsonwhat tracks. ### Does FatTail use Cloudflare? Yes. runsonwhat found Cloudflare at FatTail through Cloudflare code on fattail.com. Cloudflare is a CDN & Edge tool used by 700,928 companies runsonwhat tracks. ### Has FatTail changed tools recently? Yes. On runsonwhat's rechecks, FatTail stopped using Atlassian, Braintree and Duo (latest on October 19, 2026). A change counts only between two checks of fattail.com done the same way. ### Which companies have a tech stack similar to FatTail's? The companies with the stacks most like FatTail's are Watertown Daily Times, mint, SMTP.com and https://www.fox10tv.com, according to runsonwhat (October 2026). Each shares 6 to 7 tools with FatTail, and rare tools count for more than common ones like Google Workspace, so the match reflects real stack choices. ### How does runsonwhat know what FatTail uses? runsonwhat reads public records only. Of the 15 tools at FatTail, 7 were found through code on fattail.com, 5 through subdomains that point at the vendor and 3 through email records. A tool is listed only when a direct record backs it up; DNS is rechecked weekly and fattail.com about monthly. --- Source: runsonwhat, https://www.runsonwhat.com/company/fattail.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.