# What does DuoCircle LLC use? DuoCircle LLC (duocircle.com) shows public evidence of 21 tools, according to runsonwhat (last checked 2026-11-01). - Industry: IT Services - Size: 11–50 employees - Based in: San Diego, United States - Founded: 2014 - LinkedIn: https://www.linkedin.com/company/duocircle ## 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 | Website code | | | [Amazon Route 53](https://www.runsonwhat.com/reverse/route53) | DNS | DNS records | | | [Google Cloud](https://www.runsonwhat.com/reverse/gcp) | Hosting & Cloud | Custom domain | | | [Vercel](https://www.runsonwhat.com/reverse/vercel) | Hosting & Cloud | Custom domain, DNS records, Website code | 2024-08 | ## Application | Tool | Category | Evidence | Since | |---|---|---|---| | [Tailwind CSS](https://www.runsonwhat.com/reverse/tailwind) | Frontend | Website code | | | [Astro](https://www.runsonwhat.com/reverse/astro) | Frontend | Website code | | | [WorkOS](https://www.runsonwhat.com/reverse/workos) | Auth & Identity | Custom domain | 2026-08 | ## 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 | | | [Umami](https://www.runsonwhat.com/reverse/umami) | Analytics | Website code | | | [Site24x7](https://www.runsonwhat.com/reverse/site24x7) | Monitoring | Custom domain, DNS verification records, Website code | 2017-12 | ## 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 | | | [Mailchimp](https://www.runsonwhat.com/reverse/mailchimp) | Marketing | Email records | | | [Freshdesk](https://www.runsonwhat.com/reverse/freshdesk) | Support & Docs | Custom domain, Website code | 2013-10 | ## Company Ops | Tool | Category | Evidence | Since | |---|---|---|---| | [Google Workspace](https://www.runsonwhat.com/reverse/google-workspace) | Workspace | Email records, Website code | | | [SendGrid](https://www.runsonwhat.com/reverse/sendgrid) | Email Delivery | Email records | | | [Mailchimp Transactional](https://www.runsonwhat.com/reverse/mandrill) | Email Delivery | Email records | | | [EasyDMARC](https://www.runsonwhat.com/reverse/easydmarc) | Security & Compliance | Email records | | ## FAQ ### What tools does DuoCircle use? As of November 2026, runsonwhat has found 21 tools at DuoCircle (duocircle.com) in public records. Edge & Hosting: Cloudflare, Amazon Web Services and Amazon Route 53. Application: Tailwind CSS, Astro and WorkOS. Data & Observability: Google Analytics, Google Tag Manager and Umami. Go-to-market: Google Ads, Meta Pixel and Mailchimp. Company Ops: Google Workspace, SendGrid and Mailchimp Transactional. Last checked November 1, 2026. ### What cloud does DuoCircle run on? DuoCircle uses Amazon Web Services for hosting and cloud infrastructure, alongside Google Cloud and Vercel, according to runsonwhat (November 2026). runsonwhat found Amazon Web Services through Amazon Web Services code on duocircle.com. Amazon Web Services is used by 147,127 companies runsonwhat tracks. ### What email provider does DuoCircle use? DuoCircle uses Google Workspace for email and office software, according to runsonwhat (November 2026). runsonwhat found Google Workspace through email records that authorize Google Workspace and code on duocircle.com. Google Workspace is used by 415,478 companies runsonwhat tracks. ### What does DuoCircle use for customer support? DuoCircle uses Freshdesk for customer support and documentation, according to runsonwhat (November 2026). runsonwhat found Freshdesk through a subdomain that points at Freshdesk and code on duocircle.com, and DuoCircle has used it since at least October 2013. Freshdesk is used by 12,776 companies runsonwhat tracks. ### What analytics tools does DuoCircle use? DuoCircle uses Google Analytics for analytics, alongside Google Tag Manager and Umami, according to runsonwhat (November 2026). runsonwhat found Google Analytics through Google Analytics code on duocircle.com. Google Analytics is used by 905,939 companies runsonwhat tracks. ### What marketing software does DuoCircle use? DuoCircle uses Mailchimp for marketing, according to runsonwhat (November 2026). runsonwhat found Mailchimp through email records that authorize Mailchimp. Mailchimp is used by 118,199 companies runsonwhat tracks. ### How long has DuoCircle used Freshdesk? DuoCircle has used Freshdesk since at least October 2013, going by the first public certificate of the duocircle.com subdomain that points at Freshdesk. Other long-running tools at DuoCircle include Site24x7 (since December 2017), Vercel (since August 2024) and WorkOS (since August 2026). ### Does DuoCircle use Cloudflare? Yes. runsonwhat found Cloudflare at DuoCircle through Cloudflare code on duocircle.com. Cloudflare is a CDN & Edge tool used by 728,643 companies runsonwhat tracks. ### Which companies have a tech stack similar to DuoCircle's? The companies with the stacks most like DuoCircle's are GameAnalytics, Expedient Enterprise Cloud, Vomo and FriendliAI, according to runsonwhat (November 2026). Each shares 2 to 13 tools with DuoCircle, and rare tools count for more than common ones like Google Workspace, so the match reflects real stack choices. ### How does runsonwhat know what DuoCircle uses? runsonwhat reads public records only. Of the 21 tools at DuoCircle, 9 were found through code on duocircle.com, 5 through email records, 5 through subdomains that point at the vendor, 1 through website configuration files and 1 through DNS records. A tool is listed only when a direct record backs it up; DNS is rechecked weekly and duocircle.com about monthly. --- Source: runsonwhat, https://www.runsonwhat.com/company/duocircle.com (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.