Active companies
Companies their accelerator lists as active, or whose site is alive. 17,200 companies.
clusterConsumer 1,779B2B SaaS 1,691Fintech 1,477Healthcare and bio 1,404Vertical AI agents 1,377Robotics and physical world 1,231Commerce and marketplaces 1,090Climate and energy 789Other 612Developer tools 546Agent infrastructure 433Security and compliance 395Data for AI 377AI infra and compute 284Horizontal AI assistants 234Defense and space 216
| Company | Cluster | Program | Status | Last signal |
|---|---|---|---|---|
| ApolloShield ApolloShield is a system that detects unwanted drones and drives them… | Defense and spacedrone detection and interdiction | Y CombinatorS16 | Active | checked 2026-08-23 |
| Prime Lightworks Prime Lightworks Inc. manufactures electric propulsion systems for… | Defense and spaceelectric propulsion for satellites | Y CombinatorS16 | Site unreachable | checked 2026-08-17 |
| Astranis Advanced satellites for high orbits. | Defense and spaceadvanced satellite communications | Y CombinatorW16 | Active | checked 2026-08-23 |
| Boom Economically and environmentally sustainable supersonic travel | Defense and spacesupersonic aircraft manufacturing | Y CombinatorW16 | Active | checked 2026-08-23 |
| Relativity Space Building humanity’s multiplanetary future. | Defense and space3D printed rockets and reusable launch vehicles | Y CombinatorW16 | Active | checked 2026-08-23 |