Inactive companies
Companies marked inactive, or whose site is gone. 1,197 companies.
clusterConsumer 311B2B SaaS 162Commerce and marketplaces 109Developer tools 105Fintech 95Healthcare and bio 84Robotics and physical world 56Vertical AI agents 50Climate and energy 34Data for AI 30Security and compliance 27Horizontal AI assistants 20Agent infrastructure 17Other 16AI infra and compute 14Defense and space 5
| Company | Cluster | Program | Status | Last signal |
|---|---|---|---|---|
| Exosonic, Inc. Developing supersonic UAVs as a pathway to quiet supersonic flight | Defense and spaceSupersonic military UAVs | Y CombinatorW20 | Inactive | checked 2026-08-23 |