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 153AI infra and compute 152Climate and energy 123Defense and space 85Other 44
| Company | Cluster | Program | Status | Last signal |
|---|---|---|---|---|
| GreenTallyAI Affordable carbon tracking solution for all businesses | Climate and energyAI-powered carbon accounting platform | Y CombinatorS23 | Inactive | checked 2026-08-23 |
| LeafpressAI AI Energy Management | Climate and energyAI utility energy management | Y CombinatorS23 | Inactive | 2026-08-23 |
| Line.Build Incentives and financing for energy efficiency upgrades | Climate and energyenergy efficiency financing for contractors | Y CombinatorS23 | Inactive | checked 2026-08-17 |
| OutSail Technologies Revolutionary, Modern Wing Sails | Climate and energyautonomous wind-powered marine vessels | Y CombinatorW23 | Inactive | checked 2026-08-17 |
| Overflux Streamline EV charger installations for real estate developers | Climate and energyEV charger installation automation | Y CombinatorW23 | Inactive | - |