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
- Companies
- 74
- Tools identified
- 492
- Categories
- 16
- Last update
- Oct 2026
About the cohort
74 companies
Most adopted tools
Across all 16 categories
IT & Infrastructure
71 of 74 companies · 17 tools identified
Jamf
Data & Analytics
68 of 74 companies · 43 tools identified
Developer & Engineering
60 of 74 companies · 53 tools identified
Marketing
60 of 74 companies · 63 tools identified
Meta
Productivity & Collaboration
58 of 74 companies · 49 tools identified
DropboxArtificial Intelligence
54 of 74 companies · 17 tools identified
Rovo
HR & Talent
51 of 74 companies · 39 tools identified
Security & Compliance
47 of 74 companies · 28 tools identified
Sales
46 of 74 companies · 76 tools identified
Drift
Legal
38 of 74 companies · 5 tools identified
Commerce
37 of 74 companies · 16 tools identified
Design & Creative
37 of 74 companies · 14 tools identified
Wistia
Customer Experience
34 of 74 companies · 27 tools identified
Finance
27 of 74 companies · 24 tools identified
Industry Software
12 of 74 companies · 13 tools identified
Operations
10 of 74 companies · 6 tools identified
Detailed stacks
Browse every Y Combinator Top companies company
Stripe
San Francisco, USA
Airbnb
San Francisco, USA
Zapier
San Francisco, USA
Dropbox
San Francisco, USA
Deel
San Francisco, USA
Brex
San Francisco, USA
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