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 |
|---|---|---|---|---|
| Reebeez Reebeez creates powerful microengines for UAVs. With a 2hr + flight… | Robotics and physical worldUAV propulsion microengines | Y CombinatorS16 | Inactive | checked 2026-08-24 |
| Robby TechnologiesAI We are building a fleet of autonomous mobile robots that travel on… | Robotics and physical worldAutonomous last-mile delivery robots | Y CombinatorS16 | Inactive | checked 2026-08-17 |
| SmartSite Smartsite is a hardware device to protect workers from health risks… | Robotics and physical worldconstruction site safety hardware | Y CombinatorS16 | Inactive | checked 2026-08-24 |
| Starsky RoboticsAI Driverless Trucks, for real. | Robotics and physical worldautonomous trucking | Y CombinatorS16 | Inactive | checked 2026-08-24 |
| Enflux Motion capture clothing for injury prevention | Robotics and physical worldMotion capture wearables for fitness | Y CombinatorW16 | Inactive | checked 2026-08-24 |
| Inevitable Tech To make food a renewable resource, for everyone | Robotics and physical worldAutomated vertical farming systems | Y CombinatorW16 | Inactive | checked 2026-08-23 |
| Open Motors Open Motors (formerly OSVehicle) is a B2B company that is developing… | Robotics and physical worldmodular electric vehicle platforms | Y CombinatorW16 | Inactive | checked 2026-08-23 |