Scanned Oct 11, 2026, 3:57 PM UTC Markdown

Evidence report

posthog.com stack

posthog.com

A record of technologies visible in the site, vendors named in its public subprocessors list, and infrastructure published in DNS.

posthog.com

13 seen in the page · 9 named in their DPA · 6 in DNS · 1260 ms

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Seen in the page

HTML, headers, cookies and bundles

OpenAI— named inside a JavaScript bundle75%

Analytics

PostHog— named inside a JavaScript bundle75%

Digital asset management

Cloudinary— matched a marker in the page HTML80%

Feed

RSS— matched a marker in the page HTML80%

JS framework

React— named inside a JavaScript bundle75%

JS library

core-js— named inside a JavaScript bundle75%
LottieFiles— named inside a JavaScript bundle75%

Metadata

Open Graph— declared in a meta tag95%

PaaS

Vercel— sent in a response header95%

Static site generator

Gatsby4.25.9— declared in a meta tag95%

UI framework

Radix UI— matched a marker in the page HTML80%
Tailwind CSS— matched a marker in the page HTML80%

Web app

PWA— matched a marker in the page HTML80%

Named in their DPA

Read from the company’s own sub-processor list

PostHoganalytics source
“Subprocessors - PostHog”
Salesforcecrm source
“Salesforce - customer relationship management”
PlanetScaledatabase source
“PlanetScale, Inc.”
Amazon Web Serviceshosting source
“Amazon Web Services, Inc.”
Cloudflarehosting source
“Cloudflare, Inc.”
Google Cloudhosting source
“Google Cloud Platform - cloud data infrastructure”
Zendesksupport source
“Zendesk - customer support tool”
Google Workspaceworkplace source
“Google Workspace - internal collaboration tools”
Slackworkplace source
“Slack - internal communications tool”

Published in their DNS

Anyone can check these with dig

VercelHostingCNAME 8eb78e9daddac53f.vercel-dns-016.com
Google WorkspaceEmailMX aspmx.l.google.com
MailchimpEmailSPF v=spf1 include:_spf.google.com include:mail.zendesk.com include:servers.mcsv.net include:spf.mandrillapp.com include:amazonses.com include:mailgun.org -all
Amazon SESEmailSPF v=spf1 include:_spf.google.com include:mail.zendesk.com include:servers.mcsv.net include:spf.mandrillapp.com include:amazonses.com include:mailgun.org -all
MailgunEmailSPF v=spf1 include:_spf.google.com include:mail.zendesk.com include:servers.mcsv.net include:spf.mandrillapp.com include:amazonses.com include:mailgun.org -all
Cloudflare DNSDNSNS julissa.ns.cloudflare.com

Everything above carries the signal it was read from. We do not guess: a tool we cannot point at is not listed, which is why this result may be shorter than scanners that fill the gaps.