Y Combinator companies
The Y Combinator portfolio as the radar sees it: synced daily, classified into clusters, checked for life and movement. 6,198 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 152Climate and energy 123Defense and space 85Other 44
| Company | Cluster | Program | Status | Last signal |
|---|---|---|---|---|
| Flock Safety The first public safety operating system that eliminates crime. | Security and complianceAI-powered public safety surveillance | Y CombinatorS17 | Active | checked 2026-08-23 |
| RideAlong We save lives by giving police and health workers key info to safely… | Security and compliancelaw enforcement safety intelligence | Y CombinatorS17 | Inactive | checked 2026-08-17 |
| Templarbit Protecting applications from malicious activity | Security and complianceapplication security protection | Y CombinatorS17 | Acquired | checked 2026-08-24 |
| Upfort Turnkey security & hassle-free cyber insurance from leading insurers | Security and compliancecyber insurance and risk management platform | Y CombinatorS17 | Active | checked 2026-08-23 |
| Ambient.aiAI AI company transforming enterprise physical security to prevent… | Security and complianceAI computer vision for physical security | Y CombinatorW17 | Active | checked 2026-08-23 |
| Apozy Apozy makes every website safe to browse | Security and compliancebrowser isolation threat defense | Y CombinatorW17 | Active | checked 2026-08-23 |
| BloomAPI BloomAPI helps doctors share clinical data. Today most healthcare… | Security and compliancehealthcare data interoperability | Y CombinatorW17 | Active | checked 2026-08-23 |
| EntryAI Biometric sign in and identity verification platform | Security and complianceBiometric identity verification platform | Y CombinatorW17 | Inactive | checked 2026-08-24 |