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Technologies / Castor / Stitch

Companies using Castor and Stitch

2 companies in our data have public evidence for both Castor and Stitch, and 2 name both in their own subprocessor list. Each company below links to the source for every claim. Our coverage is partial, so this is not everyone.

2companies use both
100%of Castor users
7%of Stitch users
2name both as subprocessors

The companies

Strongest evidence first: a company naming both in its own subprocessor list comes before one seen on its website or in job postings.

Subprocessor listPrivacy policyWebsiteJob postings

CompanyCastorStitch
Cypress.ioCypress provides an open-source app and a cloud platform for testing web applications, including end-to-end, component, and API testing.
JWXjwx.comJWX provides technology platforms for video streaming, publishing, and advertising.Media and entertainment

The two technologies

Castor is an AI-native clinical trial platform that combines EDC, eCOA, eConsent, and data management in one platform. It is used to capture, manage, and review clinical trial and real-world evidence study data.

Summarized from castoredc.com on 8 Nov 2026.

100% of the 2 companies we see using Castor also show the other.

All 2 companies using Castor

Stitch

Data

Stitch is a payment gateway built for enterprise scale. It is used to elevate online payments stacks.

Summarized from stitch.money on 8 Nov 2026.

7% of the 27 companies we see using Stitch also show the other.

All 27 companies using Stitch27 name it as a subprocessorMore in Data

Other pairs

Companies with their own evidence for both.

More with Stitch

Cloudflare27companiesAmazon Web Services25companiesGoogle Workspace24companiesStripe17companiesGoogle Tag Manager16companiesOpenAI16companies

Questions

How many companies use both Castor and Stitch?

2 companies in StrataDB's data have public evidence for both, and 2 of them name both in their own subprocessor list, the strongest evidence we hold. Our coverage is partial, so the real number is higher.

Which companies use Castor and Stitch?

Cypress.io and JWX. Each one links to the evidence behind it.

How does StrataDB know a company uses Castor and Stitch?

From four kinds of public evidence: subprocessor lists, privacy policies, website code and job postings. Each is kept apart with its source and the date we saw it. A company missing here means we found no evidence, not that it does not use them.

Find every company using Castor and Stitch

See the full list with the source for each company, and run the same lookup for any technology from the API, Claude or your browser.

  • Every company and vendor, with its public source
  • 100 API calls a month, plus MCP and the Chrome extension
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