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 |
|---|---|---|---|---|
| EARTH AIAI Predictive Explorer and Driller for Critical Metal Deposits | Climate and energyAI exploration for critical minerals | Y CombinatorS19 | Active | checked 2026-08-23 |
| Kitekraft Building flying wind turbines. | Climate and energyairborne wind energy systems | Y CombinatorS19 | Site unreachable | checked 2026-08-23 |
| Wren Wren is a monthly subscription to offset your carbon footprint. | Climate and energyPersonal carbon offsetting subscription | Y CombinatorS19 | Active | checked 2026-08-23 |
| AmpUp We make EV charging as simple and reliable as LED lights | Climate and energyEV charging infrastructure | Y CombinatorW19 | Active | checked 2026-08-23 |
| Intelline Intelline makes the world's most efficient fuel agnostic engines for… | Climate and energyfuel-agnostic industrial power generation | Y CombinatorW19 | Active | checked 2026-08-24 |
| Maple Materials We turn CO2 into battery-grade graphite and oxygen. | Climate and energyCarbon-negative graphite production | Y CombinatorW19 | Inactive | checked 2026-08-17 |
| Prometheus We use solar and wind power to make zero net carbon electrofuels | Climate and energysynthetic electrofuels from renewable energy | Y CombinatorW19 | Active, new domain | 2026-08-23 |
| Valo Cutting edge hydrofoil systems for boatbuilders | Climate and energyMaritime efficiency technology | Y CombinatorW19 | Active | 2026-08-23 |