1.

Novelty RPAS

2.

Nytro.ai

3.

O'Qualia

4.

Obsidian Systems 2015-01-01

5.

Ocean Aero 2012-10-15

6.

OKSI 1991.0

7.

OPERVA.AI 2020.0

8.

OpsmateAI

9.

Orbex Space 2015-01-01

10.

Orbital Composites

11.

Orbital UAV

12.

OrbitsHub