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Companies / Halcyon

Halcyon tech stack

halcyon.us

Halcyon provides software for business valuations, insights, and next steps. It serves modern business advisors.

Summarized from its homepage on 10 Nov 2026.

Classified asFinance and accounting software

Vendors of Halcyon and the evidence for each

Halcyon declares 10 subprocessors, including AI providers OpenAI.

VendorCategoryEvidenceLevel
Amazon Web ServicesCloud and infrastructureConfirmed
Subprocessor listProcesses data for the company10 Nov 2026Source
Companies using Amazon Web Services
ApideckDeveloper toolsConfirmed
Subprocessor listNamed as API Deck · Processes data for the company10 Nov 2026Source
Companies using Apideck
BoxProductivityConfirmed
Subprocessor listProcesses data for the company10 Nov 2026Source
Companies using Box
Google CloudCloud and infrastructureConfirmed
Subprocessor listNamed as Google Cloud Platform · Processes data for the company10 Nov 2026Source
Companies using Google Cloud
OpenAIAI and LLM providersConfirmed
Subprocessor listProcesses data for the company10 Nov 2026Source
Companies using OpenAI
PostHogAnalyticsConfirmed
Subprocessor listProcesses data for the company10 Nov 2026Source
Companies using PostHog
ReductoDeveloper toolsConfirmed
Subprocessor listProcesses data for the company10 Nov 2026Source
Companies using Reducto
SentryObservabilityConfirmed
Subprocessor listProcesses data for the company10 Nov 2026Source
Companies using Sentry
StripePaymentsConfirmed
Subprocessor listProcesses data for the company10 Nov 2026Source
Companies using Stripe
VantaSecurity and identityConfirmed
Subprocessor listProcesses data for the company10 Nov 2026Source
Companies using Vanta

4 more vendors

See Halcyon's full stack and the source for every claim.

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Questions about Halcyon

Does Halcyon use OpenAI?

Vendor's own statement, retrieved from the source URL on the date shown. StrataDB does not verify the underlying claim. Data sources.

See Halcyon's full stack

Every vendor with its source and date, and an alert when Halcyon adds or drops one. The same lookup works for any company.

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