The Y Combinator Top companies stack

Y Combinator's Top Companies list, the highest-valued startups among the 5,000 it has funded since 2005, and the software behind them: 331 tools identified, ranked by how many of the 74 run each one.

In this benchmark60 of 74 have a tool identified

Most adopted tools

03KISSmetrics
04Ironclad

HR & Talent

38 of 74 companies · 29 tools identified

02Lattice
03Wellfound
04BambooHR
05HackerRank

Developer & Engineering

37 of 74 companies · 36 tools identified

Data & Analytics

35 of 74 companies · 37 tools identified

01KISSmetrics
02Statsig
03Middesk
05AppsFlyer

Productivity & Collaboration

32 of 74 companies · 44 tools identified

02Confluence
03Grain
04Notion
05Slack

Sales

28 of 74 companies · 45 tools identified

01Qualified
02FullEnrich
03Highspot
04HubSpot
05Amplemarket

Customer Experience

23 of 74 companies · 22 tools identified

03Vitally
04Zendesk
05Gainsight

IT & Security

22 of 74 companies · 20 tools identified

011Password
03Cobalt
04HackerOne

Marketing

22 of 74 companies · 32 tools identified

01AirOps
02Clearscope
03Semrush
04Branch
05Iterable

Finance

19 of 74 companies · 19 tools identified

02Pigment
03Plaid
04Spendesk
05Tipalti

Artificial Intelligence

16 of 74 companies · 14 tools identified

02ElevenLabs
03Agentforce
04Hugging Face
05WRITER

Commerce

16 of 74 companies · 14 tools identified

02Checkout
03Recurly
04WP Engine
05Adyen

Design & Creative

12 of 74 companies · 9 tools identified

02Framer
03Photoroom
04Webflow
05Ocus

Operations

5 of 74 companies · 1 tool identified

Industry Software

4 of 74 companies · 2 tools identified

01Checkr
02DFNS

Browse 5,089 other organizations' stacks

See what teams run across the rest of the Soft Atlas catalogue, by industry, size and country.

Browse stacks