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 |
|---|---|---|---|---|
| Apolink 24/7 satellite connectivity in low Earth orbit | Defense and spacesatellite connectivity infrastructure | Y CombinatorF24 | Active | checked 2026-08-23 |
| Ares Industries Building low-cost cruise missiles | Defense and spacecruise missile manufacturing | Y CombinatorS24 | Active | checked 2026-08-23 |
| Guardian RF Drone detection for US defense and national security | Defense and spacedrone detection and counter-UAS | Y CombinatorS24 | Active | checked 2026-08-23 |
| Theseus GPS Denied Navigation for Drones | Defense and spaceGPS-denied drone navigation | Y CombinatorS24 | Active | checked 2026-08-23 |
| UsulAI AI Platform for Winning Defense & Government Contracts | Defense and spaceAI contract matching for government | Y CombinatorS24 | Active | checked 2026-08-23 |
| BasaltAI Constellations as a Service | Defense and spaceAI-controlled satellite constellations | Y CombinatorW24 | Active | checked 2026-08-23 |
| DeepnightAI Building The Next Generation of Night Vision Devices | Defense and spaceAI-enhanced night vision devices | Y CombinatorW24 | Active, new domain | 2026-08-23 |
| EdgeTraceAI Describe It. Find It. Act On It. | Defense and spaceAI-powered video intelligence for public safety | Y CombinatorW24 | Active | checked 2026-08-23 |
| Elodin Unified flight software and hardware for the mission of tomorrow | Defense and spaceFlight software and hardware for drones and satellites | Y CombinatorW24 | Active | checked 2026-08-23 |