Vendor categories

Every vendor in the index sits in one of 24 categories. Each page below ranks the vendors in that category by how many companies publicly disclose them, shows what those companies also run, and links to the underlying evidence — 343 vendor placements across 4,531 company-category pairs.

Cloud Infrastructure vendors

22 vendors tracked · AWS, GCP, Cloudflare

Analytics / Data vendors

21 vendors tracked · Segment, Amplitude, Mixpanel

Productivity vendors

20 vendors tracked · Slack, Notion, Airtable

Payments vendors

22 vendors tracked · Stripe, Adyen, Braintree

CRM / Sales vendors

12 vendors tracked · Salesforce, HubSpot

Email vendors

18 vendors tracked · SendGrid, Mailgun, Iterable

AI / ML vendors

21 vendors tracked · OpenAI, Anthropic

Support / CX vendors

15 vendors tracked · Zendesk, Intercom

Marketing / Ads vendors

13 vendors tracked · Meta, Google Ads, TikTok

Database / Data Infra vendors

14 vendors tracked · MongoDB, Redis, Snowflake

Observability vendors

18 vendors tracked · Datadog, Sentry

SMS / Messaging vendors

16 vendors tracked · Twilio, Sinch, MessageBird

E-commerce / POS vendors

13 vendors tracked · Shopify, Lightspeed, Wix

Auth / Identity vendors

10 vendors tracked · Auth0, Okta, Clerk

Integration / ETL vendors

14 vendors tracked · Zapier, Fivetran, Workato

Privacy / Compliance vendors

12 vendors tracked · OneTrust, Vanta

Security / Fraud vendors

15 vendors tracked · MaxMind, Onfido, Snyk

Finance / Accounting vendors

13 vendors tracked · QuickBooks, Xero, NetSuite

HR / Payroll vendors

16 vendors tracked · Rippling, Deel

Data Enrichment vendors

10 vendors tracked · Clearbit, ZoomInfo, Apollo

E-signature / Contracts vendors

8 vendors tracked · DocuSign, PandaDoc

Media / CDN vendors

9 vendors tracked · Cloudinary, Mux, Vimeo

Realtime Infrastructure vendors

7 vendors tracked · Pusher, Ably, LiveKit

Search vendors

4 vendors tracked · Algolia, Coveo, Typesense

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