1. Aerojet Rocketdyne by L3Harris Technologies Inc.
2. AGILE SPACE INDUSTRIES Inc.
3. Airbus S.A.S
4. Ariane Group by Safran S.A.
5. Avio S.p.A. by General Electric Company
6. Benchmark Space Systems
7. Busek Co Inc.
8. CU Aerospace
9. Dawn Aerospace Limited
10. ENPULSION GmbH
11. Exotrail
12. Honeywell International Inc.
13. IHI Corporation
14. Lockheed Martin Corporation
15. Mitsubishi Electric Corporation
16. Moog Inc.
17. MTAR Technologies Limited
18. NanoAvionics Corp by Kongsberg Gruppen ASA
19. Northrop Grumman Corporation
20. OHB SE
21. Rafael Advanced Defense Systems Ltd.
22. Space Exploration Technologies Corp.
23. Thales Group
24. ThrustMe
25. Ursa Major Technologies Inc.