What does Quantum-Si use?

As of October 2026, runsonwhat has found 37 tools at Quantum-Si (quantum-si.com) in public records. Edge & Hosting: Cloudflare, Amazon Web Services and Amazon Route 53. Application: jQuery, Google Fonts and Adobe Fonts. Data & Observability: Google Analytics, Google Tag Manager and Hotjar. Go-to-market: WordPress, Google Ads and Yoast SEO. Company Ops: Microsoft 365, Google Workspace and SendGrid. Last checked October 4, 2026.

Quantum-Si uses Amazon Web Services for hosting and cloud infrastructure, according to runsonwhat (October 2026). runsonwhat found Amazon Web Services through Amazon Web Services code on quantum-si.com. Amazon Web Services is used by 143,917 companies runsonwhat tracks.

Quantum-Si uses Salesforce for its CRM, alongside 6sense and Salesloft, according to runsonwhat (October 2026). runsonwhat found Salesforce through email records that authorize Salesforce and code on quantum-si.com. Salesforce is used by 32,907 companies runsonwhat tracks.

Quantum-Si uses Microsoft 365 for email and office software, alongside Google Workspace and Apple Business, according to runsonwhat (October 2026). runsonwhat found Microsoft 365 through email records that authorize Microsoft 365 and a DNS verification record. Microsoft 365 is used by 694,545 companies runsonwhat tracks.

Quantum-Si uses Zendesk for customer support and documentation, according to runsonwhat (October 2026). runsonwhat found Zendesk through email records that authorize Zendesk and code on quantum-si.com. Zendesk is used by 40,117 companies runsonwhat tracks.

Quantum-Si uses Google Analytics for analytics, alongside Google Tag Manager and Hotjar, according to runsonwhat (October 2026). runsonwhat found Google Analytics through Google Analytics code on quantum-si.com. Google Analytics is used by 816,515 companies runsonwhat tracks.

Quantum-Si has used Salesloft since at least October 2024, going by the first public certificate of the quantum-si.com subdomain that points at Salesloft.

Yes. runsonwhat found jQuery at Quantum-Si through jQuery code on quantum-si.com. jQuery is a Frontend tool used by 862,921 companies runsonwhat tracks.

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

The companies with the stacks most like Quantum-Si's are Information Technology (IT) Certifications & Tech Training | CompTIA, Numan, SalesRabbit and Kentik, according to runsonwhat (October 2026). Each shares 16 to 24 tools with Quantum-Si, 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 37 tools at Quantum-Si, 17 were found through code on quantum-si.com, 11 through DNS records, 8 through email records and 1 through subdomains that point at the vendor. A tool is listed only when a direct record backs it up; DNS is rechecked weekly and quantum-si.com about monthly.