What does Check use?

As of October 2026, runsonwhat has found 31 tools at Check (checkhq.com) in public records. Edge & Hosting: Cloudflare, Amazon Route 53 and Amazon CloudFront. Application: jQuery, GSAP and OpenAI. Data & Observability: Google Analytics, Google Tag Manager and Atlassian Statuspage. Go-to-market: Google Ads, HubSpot and Zendesk. Company Ops: Google Workspace, reCAPTCHA and SendGrid. Last checked October 7, 2026.

Check uses HubSpot for its CRM, according to runsonwhat (October 2026). runsonwhat found HubSpot through a subdomain that points at HubSpot, and Check has used it since at least August 2021. HubSpot is used by 91,519 companies runsonwhat tracks.

Check 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 and code on checkhq.com. Google Workspace is used by 395,458 companies runsonwhat tracks.

Check uses Zendesk for customer support and documentation, alongside ReadMe and HelpKit, according to runsonwhat (October 2026). runsonwhat found Zendesk through a subdomain that points at Zendesk, and Check has used it since at least February 2021. Zendesk is used by 40,664 companies runsonwhat tracks.

Check uses Google Analytics for analytics, alongside Google Tag Manager, according to runsonwhat (October 2026). runsonwhat found Google Analytics through Google Analytics code on checkhq.com. Google Analytics is used by 847,627 companies runsonwhat tracks.

Check uses Webflow for its website, alongside HubSpot CMS, according to runsonwhat (October 2026). runsonwhat found Webflow through a subdomain that points at Webflow and code on checkhq.com. Webflow is used by 34,146 companies runsonwhat tracks.

Check has used ReadMe since at least July 2019, going by the first public certificate of the checkhq.com subdomain that points at ReadMe. Other long-running tools at Check include Zendesk (since February 2021), HubSpot (since August 2021) and HubSpot CMS (since August 2021).

Yes. runsonwhat found jQuery at Check through jQuery code on checkhq.com. jQuery is a Frontend tool used by 894,059 companies runsonwhat tracks.

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

Yes. As of October 2026, Check has 19 open roles on its public Ashby job board, most in finance & legal (4), customer success (3) and engineering (3). 6 were posted in the last 30 days.

The companies with the stacks most like Check's are Mooncard, Mashgin, Relive Realty and Sudowrite, according to runsonwhat (October 2026). Each shares 8 to 15 tools with Check, 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 31 tools at Check, 9 were found through code on checkhq.com, 9 through DNS records, 9 through subdomains that point at the vendor and 4 through email records. A tool is listed only when a direct record backs it up; DNS is rechecked weekly and checkhq.com about monthly.