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 |
|---|---|---|---|---|
| HyperDX Open-source, dev-friendly observability. | Developer toolsopen-source observability platform | Y CombinatorS22 | Acquired | checked 2026-08-23 |
| Payload Developer-First Headless CMS and Application Framework | Developer toolsheadless CMS framework | Y CombinatorS22 | Acquired | checked 2026-08-23 |
| mutable.aiAI Artificially Intelligent Corporations | Developer toolsAI-powered code documentation and understanding | Y CombinatorW22 | Acquired | checked 2026-08-17 |
| Requestly Open-Source Postman alternative | Developer toolsAPI mocking and testing for developers | Y CombinatorW22 | Acquired | checked 2026-08-23 |
| SimpleHash Multi-chain token data platform | Developer toolsmulti-chain blockchain data API | Y CombinatorW22 | Acquired | checked 2026-08-23 |