What does CircleCI use?

As of October 2026, runsonwhat has found 67 tools at CircleCI (circleci.com) in public records. Edge & Hosting: Cloudflare, Amazon Web Services and Amazon Route 53. Application: Google Fonts, Vimeo and Anthropic. Data & Observability: Google Analytics, Google Tag Manager and Microsoft Clarity. Go-to-market: Google Ads, Meta Pixel and Microsoft Ads. Company Ops: Google Workspace, reCAPTCHA and Apple Business. Last checked October 3, 2026.

CircleCI uses Amazon Web Services for hosting and cloud infrastructure, alongside Vercel, according to runsonwhat (October 2026). runsonwhat found Amazon Web Services through Amazon Web Services code on circleci.com. Amazon Web Services is used by 143,954 companies runsonwhat tracks.

CircleCI uses HubSpot for its CRM, alongside ZoomInfo, Bombora and Clickagy, according to runsonwhat (October 2026). runsonwhat found HubSpot through a DNS verification record for HubSpot and code on circleci.com. HubSpot is used by 89,882 companies runsonwhat tracks.

CircleCI uses Google Workspace for email and office software, alongside Apple Business, according to runsonwhat (October 2026). runsonwhat found Google Workspace through email records that authorize Google Workspace. Google Workspace is used by 393,381 companies runsonwhat tracks.

CircleCI uses Intercom for customer support and documentation, alongside Drift, according to runsonwhat (October 2026). runsonwhat found Intercom through a subdomain that points at Intercom, and CircleCI has used it since at least August 2017. Intercom is used by 7,982 companies runsonwhat tracks.

CircleCI uses Google Analytics for analytics, alongside Google Tag Manager, Microsoft Clarity and Hotjar, according to runsonwhat (October 2026). runsonwhat found Google Analytics through Google Analytics code on circleci.com. Google Analytics is used by 818,798 companies runsonwhat tracks.

CircleCI has used Atlassian Statuspage since at least November 2016, going by the first public certificate of the circleci.com subdomain that points at Atlassian Statuspage. Other long-running tools at CircleCI include Auth0 (since April 2017), Intercom (since August 2017) and SafeBase (since July 2023).

Yes. runsonwhat found Google Fonts at CircleCI through Google Fonts code on circleci.com. Google Fonts is a Media & UI tool used by 760,866 companies runsonwhat tracks.

Yes. runsonwhat has found Anthropic and Smithery at CircleCI; Anthropic, for example, through a DNS verification record for Anthropic. AI services called only from servers leave no public trace, so CircleCI may use more AI tools than these.

Yes. As of October 2026, CircleCI has 13 open roles on its public Greenhouse job board, most in sales (5), engineering (3) and customer success (1). 6 were posted in the last 30 days.

The companies with the stacks most like CircleCI's are uPerform by Ancile, La7.it, Superchute and AdvantageCare Physicians, according to runsonwhat (October 2026). Each shares 8 to 18 tools with CircleCI, and rare tools count for more than common ones like Google Workspace, so the match reflects real stack choices.

runsonwhat reads public records only. Of the 67 tools at CircleCI, 36 were found through code on circleci.com, 23 through DNS records, 4 through subdomains that point at the vendor, 3 through email records and 1 through website configuration files. A tool is listed only when a direct record backs it up; DNS is rechecked weekly and circleci.com about monthly.