Y Combinator companies
The Y Combinator portfolio as the radar sees it: synced daily, classified into clusters, checked for life and movement. 6,197 companies.
clusterVertical AI agents 898Consumer 821B2B SaaS 787Fintech 633Developer tools 515Healthcare and bio 477Commerce and marketplaces 433Agent infrastructure 350Robotics and physical world 314Data for AI 192Security and compliance 189Horizontal AI assistants 152AI infra and compute 151Climate and energy 123Defense and space 85Other 44
| Company | Cluster | Program | Status | Last signal |
|---|---|---|---|---|
| CSPA The Computer Science Proficiency Assessment (CSPA™) is a… | Developer toolsdeveloper skills assessment platform | Y CombinatorS18 | Acquired | 2026-08-23 |
| OneGraph GraphQL API to connect all of the internet's APIs. Join us at Netlify! | Developer toolsGraphQL API integration platform | Y CombinatorS18 | Acquired | checked 2026-08-17 |
| Optic Making APIs Developer-friendly | Developer toolsAPI documentation and change management | Y CombinatorS18 | Acquired | 2026-08-23 |
| CodeStream CodeStream is a Developer Collaboration Platform designed to… | Developer toolsIDE code review collaboration | Y CombinatorW18 | Acquired | 2026-08-23 |
| Hunter2 Hunter2 trains engineering teams in application security through… | Developer toolsapplication security training for developers | Y CombinatorW18 | Acquired | checked 2026-08-17 |
| Jido MapsAI Turn your data into a deployed computer vision model | Developer toolsComputer vision model deployment platform | Y CombinatorW18 | Acquired | 2026-08-23 |
| NewCraft Universal API for HR & Payroll | Developer toolsHR payroll API infrastructure | Y CombinatorW18 | Acquired | 2026-08-23 |