Alternatives to VIRIDIAN

Astra is a space technology company focused on providing reliable and affordable launch services for small satellites.

Spacecraft propulsion and in-space logistics company developing water-based electric propulsion systems.

Designs and manufactures advanced in-space propulsion systems for satellites and spacecraft.

SpaceFlux is developing advanced propulsion systems for in-space transportation and satellite maneuvering.

Japanese space tech startup developing hybrid rocket propulsion systems for satellite, launch, defense, and security applications.

Axiom Space is building the first commercial space station and providing human spaceflight services.

Provides in-space mobility solutions and electric propulsion for satellites.

European leader in space launchers and defense systems, developing and operating reliable civil and military launch vehicles.

D-Orbit Portugal is the Portuguese subsidiary of D-Orbit, a space logistics and orbital transportation company.

American aerospace company developing launch vehicles and spacecraft for commercial and government customers.

An end-to-end space company providing launch services, satellite manufacturing, and space systems solutions.

German rocket developer aiming to scale launch operations.

Building orbital data centers powered by AI and solar energy.

Developing fully and rapidly reusable rockets for low-cost, on-demand access to and from space.

Astroscale is a global leader in on-orbit servicing and space sustainability solutions.

Designs and manufactures deployable antennas and structures for satellites.

Developing high-powered solar thermal propulsion for spacecraft.

Designs and manufactures flight-proven aerospace and defense systems, including rocket engines and hypersonic capabilities.

Bulgarian aerospace manufacturer designing, building, and operating CubeSats and Nanosatellites.

Developing an optical inter-satellite communication network for high-speed data relay in space.