# What does Calm use? Calm (calm.com) shows public evidence of 40 tools, according to runsonwhat (last checked 2026-10-20). - Industry: Software - Size: 201–1,000 employees - Based in: San Francisco, United States - Founded: 2012 - LinkedIn: https://www.linkedin.com/company/calm-com ## Edge & Hosting | Tool | Category | Evidence | Since | |---|---|---|---| | [Amazon Web Services](https://www.runsonwhat.com/reverse/aws) | Hosting & Cloud | Custom domain | | | [Amazon Route 53](https://www.runsonwhat.com/reverse/route53) | DNS | DNS records | | | [Amazon CloudFront](https://www.runsonwhat.com/reverse/cloudfront) | CDN & Edge | Custom domain, Website code | 2023-10 | ## Application | Tool | Category | Evidence | Since | |---|---|---|---| | [Next.js](https://www.runsonwhat.com/reverse/nextjs) | Frontend | Website code | | | [Anthropic](https://www.runsonwhat.com/reverse/anthropic) | AI | DNS verification records | | | [OpenAI](https://www.runsonwhat.com/reverse/openai) | AI | DNS verification records | | | [Stripe](https://www.runsonwhat.com/reverse/stripe) | Payments & Billing | DNS verification 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 | | | [web-vitals](https://www.runsonwhat.com/reverse/web-vitals) | Monitoring | Website code | | | [Atlassian Statuspage](https://www.runsonwhat.com/reverse/statuspage) | Monitoring | Custom domain | 2022-05 | | [Segment](https://www.runsonwhat.com/reverse/segment) | Analytics | Website code | | | [AppsFlyer](https://www.runsonwhat.com/reverse/appsflyer) | Analytics | Website code | | ## 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 | DNS verification records, Website code | | | [Microsoft Ads](https://www.runsonwhat.com/reverse/bing-ads) | Ads & Pixels | Website code | | | [HubSpot](https://www.runsonwhat.com/reverse/hubspot) | Sales & CRM | Email records | | | [Shopify](https://www.runsonwhat.com/reverse/shopify) | Website & CMS | Custom domain | 2021-11 | | [Zendesk](https://www.runsonwhat.com/reverse/zendesk) | Support & Docs | Custom domain, Email records | | | [Klaviyo](https://www.runsonwhat.com/reverse/klaviyo) | Marketing | DNS verification records | | | [Squarespace](https://www.runsonwhat.com/reverse/squarespace) | Website & CMS | Custom domain, Website code | 2021-07 | | [Pinterest](https://www.runsonwhat.com/reverse/pinterest) | Ads & Pixels | Website code | | | [MailerLite](https://www.runsonwhat.com/reverse/mailerlite) | Marketing | DNS verification records, Email records | | | [Marketo](https://www.runsonwhat.com/reverse/marketo) | Marketing | Custom domain, Email records | 2022-08 | | [Drift](https://www.runsonwhat.com/reverse/drift) | Support & Docs | DNS verification records | | ## 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 | | | [Apple Business](https://www.runsonwhat.com/reverse/apple) | Workspace | DNS verification records | | | [Atlassian](https://www.runsonwhat.com/reverse/atlassian) | Dev Tools | DNS verification records | | | [Mailgun](https://www.runsonwhat.com/reverse/mailgun) | Email Delivery | Custom domain | | | [Valimail](https://www.runsonwhat.com/reverse/valimail) | Security & Compliance | Email records | | | [Adobe](https://www.runsonwhat.com/reverse/adobe) | Collaboration | DNS verification records | | | [DocuSign](https://www.runsonwhat.com/reverse/docusign) | Finance & Legal | DNS verification records | | | [Zoom](https://www.runsonwhat.com/reverse/zoom) | Collaboration | DNS verification records | | | [Slack](https://www.runsonwhat.com/reverse/slack) | Collaboration | DNS verification records | | | [Jamf](https://www.runsonwhat.com/reverse/jamf) | Security & Compliance | DNS verification records | | | [Notion](https://www.runsonwhat.com/reverse/notion) | Collaboration | DNS verification records | | | [Dropbox](https://www.runsonwhat.com/reverse/dropbox) | Collaboration | DNS verification records | | | [Zapier](https://www.runsonwhat.com/reverse/zapier) | Dev Tools | DNS verification records | | ## FAQ ### What tools does Calm use? As of October 2026, runsonwhat has found 40 tools at Calm (calm.com) in public records. Edge & Hosting: Amazon Web Services, Amazon Route 53 and Amazon CloudFront. Application: Next.js, Anthropic and OpenAI. Data & Observability: Google Analytics, Google Tag Manager and web-vitals. Go-to-market: Google Ads, Meta Pixel and Microsoft Ads. Company Ops: Microsoft 365, Google Workspace and Apple Business. Last checked October 20, 2026. ### What cloud does Calm run on? Calm uses Amazon Web Services for hosting and cloud infrastructure, according to runsonwhat (October 2026). runsonwhat found Amazon Web Services through a subdomain that points at Amazon Web Services. Amazon Web Services is used by 145,262 companies runsonwhat tracks. ### What CRM does Calm use? Calm uses HubSpot for its CRM, according to runsonwhat (October 2026). runsonwhat found HubSpot through email records that authorize HubSpot. HubSpot is used by 93,012 companies runsonwhat tracks. ### What email provider does Calm use? Calm uses Microsoft 365 for email and office software, alongside Google Workspace and Apple Business, according to runsonwhat (October 2026). runsonwhat found Microsoft 365 through a DNS verification record for Microsoft 365. Microsoft 365 is used by 706,400 companies runsonwhat tracks. ### What does Calm use for customer support? Calm uses Zendesk for customer support and documentation, alongside Drift, according to runsonwhat (October 2026). runsonwhat found Zendesk through a subdomain that points at Zendesk and email records. Zendesk is used by 41,339 companies runsonwhat tracks. ### What payment provider does Calm use? Calm uses Stripe for payments and billing, according to runsonwhat (October 2026). runsonwhat found Stripe through a DNS verification record for Stripe and code on calm.com. Stripe is used by 26,976 companies runsonwhat tracks. ### How long has Calm used Squarespace? Calm has used Squarespace since at least July 2021, going by the first public certificate of the calm.com subdomain that points at Squarespace. Other long-running tools at Calm include Shopify (since November 2021), Atlassian Statuspage (since May 2022) and Marketo (since August 2022). ### Does Calm use Google Ads? Yes. runsonwhat found Google Ads at Calm through Google Ads code on calm.com. Google Ads is a Ads & Pixels tool used by 475,336 companies runsonwhat tracks. ### Does Calm use AI tools? Yes. runsonwhat has found Anthropic and OpenAI at Calm; Anthropic, for example, through a DNS verification record for Anthropic. AI services called only from servers leave no public trace, so Calm may use more AI tools than these. ### Which companies have a tech stack similar to Calm's? The companies with the stacks most like Calm's are Lucanet Americas, Workjam, ALTR and Linvio, A Paymogy Company, according to runsonwhat (October 2026). Each shares 2 to 16 tools with Calm, and rare tools count for more than common ones like Google Workspace, so the match reflects real stack choices. ### How does runsonwhat know what Calm uses? runsonwhat reads public records only. Of the 40 tools at Calm, 20 were found through DNS records, 9 through code on calm.com, 8 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 calm.com about monthly. --- Source: runsonwhat, https://www.runsonwhat.com/company/calm.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.