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 |
|---|---|---|---|---|
| Appcanary Appcanary tracks the dependencies you use in your apps and servers… | Security and compliancedependency vulnerability monitoring | Y CombinatorS15 | Acquired | checked 2026-08-23 |
| Cymmetria Shifting the asymmetry of cyber security. | Security and compliancedeception technology for threat detection | Y CombinatorS15 | Acquired | checked 2026-08-17 |
| Foxpass Making enterprise security practices available for all companies. | Security and complianceIdentity and access management | Y CombinatorS15 | Acquired | 2026-08-23 |
| Sphere Secure Workspace Sphere Pty Ltd | Security and compliancesecure collaboration workspace | Y CombinatorS15 | Acquired | checked 2026-08-23 |
| CyberFendAI Cyberfend delivers robust, real-time web and mobile security by… | Security and complianceFraud and account takeover detection | Y CombinatorW15 | Acquired | 2026-08-23 |
| SmyteAI Smyte stops bad actors on social networks and marketplaces. | Security and compliancefraud detection for marketplaces | Y CombinatorW15 | Acquired | checked 2026-08-23 |