/
Log inGet free API keyAccount
Menu
CompaniesTechnologiesAI indexDocsPricingChrome extensionLog inAccount

Technologies / Castle.io / Sentry

Companies using Castle.io and Sentry

4 companies in our data have public evidence for both Castle.io and Sentry, and 4 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.

4companies use both
100%of Castle.io users
under 1%of Sentry users
4name 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

CompanyCastle.ioSentry
Docwizedocwize.comDocwize provides document management and workflow automation software for legal, finance, construction, HR, and operations teams.Legal
GitBookgitbook.comGitBook is a documentation platform that flags outdated content and fixes it.Developer tools
lovable.dev
Signablesignable.comSignable provides electronic signature software for sending, signing, and tracking documents.

The two technologies

Castle.io

Security and identity

Castle.io is a suite of APIs for bot detection and abuse prevention. It is used to stop bots and fraud through behavioral analysis.

Summarized from docs.castle.io on 8 Nov 2026.

100% of the 4 companies we see using Castle.io also show the other.

All 4 companies using Castle.ioMore in Security and identity

Sentry

by Functional Software · Observability

Sentry is an application monitoring and debugging platform that connects errors, logs, replays, traces, profiles, and metrics under the same trace. It is used by developers to find the root causes of application issues and fix them, from development through production.

Summarized from sentry.io on 8 Nov 2026.

under 1% of the 2,229 companies we see using Sentry also show the other.

All 2,229 companies using Sentry1,646 name it as a subprocessorMore in Observability

Other pairs

Companies with their own evidence for both.

More with Sentry

Cloudflare2,213companiesGoogle Workspace1,581companiesAmazon Web Services1,195companiesStripe1,150companiesOpenAI928companiesGoogle894companies

Questions

How many companies use both Castle.io and Sentry?

4 companies in StrataDB's data have public evidence for both, and 4 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 Castle.io and Sentry?

Docwize, GitBook, lovable.dev and Signable. Each one links to the evidence behind it.

How does StrataDB know a company uses Castle.io and Sentry?

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 Castle.io and Sentry

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
  • Work email only. No card, no sales call