Alternatives to EPSILON3

Provides software for space situational awareness and operations.

Provider of space domain awareness, intelligence, and advanced missile defense technology solutions.

AI-driven satellite data compression platform to optimize transmission and storage of Earth observation data.

Software for space situational awareness and collision avoidance.

Global aerospace and defense company producing business jets, combat vehicles, submarines, and IT services.

Developing space infrastructure for data centers and beyond.

Develops and operates small satellites and provides AI-powered Earth observation data analytics.

Developing large unmanned aerial vehicles and sophisticated swarm command and control software for defense.

Designs and manufactures spacecraft solutions for government and commercial customers.

Specializes in propulsion systems for small satellites.

A global leader in space and defense technology solutions.

Specializes in plasma propulsion systems for spacecraft.

AI-powered procurement platform automating aircraft parts sourcing for airlines and maintenance providers.

Advanced greenhouse gas monitoring technology from space using miniaturized SWIR imager and micro-LIDAR instruments.

Rocket engine manufacturer for launch and in-space applications.

Develops radiation shielding solutions for space.

Develops electrospray propulsion systems for satellites.

Orbital transfer vehicles for rapid satellite deployment and repositioning.

Develops in-orbit infrastructure and components for space sustainability.

Software-first manufacturing company building a distributed network of AI-powered precision factories for critical industries.

Provides persistent orbital intelligence and space situational awareness through a global radar network and analytics.

Empowering the world with Earth observation data from microsatellites.

Develops advanced robotic components and systems for space and industrial use.

Develops AI-powered, multi-domain unmanned aerial systems for defense and commercial applications.

Enabling scalable, low-cost space-to-Earth laser communications.

A European satellite constellation and data services company.

Designs and manufactures advanced unmanned aerial systems (UAS) for defense and public safety.

Digitizing and automating airspace management for safe drone integration.

Building a space-based economy with a reusable spaceplane and orbital destinations.

Designs and manufactures advanced unmanned aerial vehicles and critical UAV components for government and commercial clients.

Operating the world's only commercial fleet of flight-ready MACH 2+ supersonic aircraft for space launch.

Designs, builds, and operates unmanned aerial systems (UAS) for logistics, civil protection, and defense.

AI-powered satellite data analytics for actionable intelligence and global monitoring.

Developing reusable spacecraft to manufacture pharmaceuticals and high-end materials in microgravity for Earth use.

European private space ventures redefining independent orbital infrastructure.

Hypersonic aircraft manufacturer building high-Mach vehicles for national defense and rapid global transport.

Designs, manufactures, and sells airplanes, rotorcraft, rockets, satellites, and missiles worldwide.

AI-native platform for autonomous, coordinated multiship drone operations.

British aerospace and defence company specializing in advanced electronic solutions, aviation services, and communications technology.

A leading enabler of the new space economy, specializing in 3D-printed satellite components and systems.

Developing next-generation commercial space stations to enable long-term human presence and microgravity research.

German startup developing hybrid-propulsion rockets for cost-effective satellite launches.

Developing and deploying advanced autonomous drones for critical missions.

Building data centers in space.

Developing reusable satellites to manufacture advanced semiconductor materials in space for Earth-based applications.

Portuguese drone manufacturer and partner in Intelic's European defence procurement hub.

Operates the world’s largest autonomous airship fleet for persistent intelligence, surveillance, and reconnaissance (ISR) capabilities.

Building ultrathin, flexible, and efficient solar cells for spacecraft.

Building satellites for very low Earth orbit (VLEO) to advance global connectivity and insight.

Hypersonic travel startup developing rotating detonation rocket engines for Mach 9 passenger flight.

Building the next era of global positioning, navigation, and timing (PNT) infrastructure.

Building the first and only space-based cellular broadband network connecting directly to standard mobile phones.

A Spanish company developing small satellite launch vehicles.

Capella Space builds and operates a constellation of Synthetic Aperture Radar (SAR) satellites for Earth observation.

Provides micro-propulsion and component solutions for satellites.

Specializes in advanced manufacturing with AI and robotics.