83
A-
SpaceSeed
Arinna
Ultra-thin TMD solar cells with 32% higher efficiency and extreme radiation hardness for space.
Palo Alto, CAFounded 2023
Procurement has shifted from prototype studies to production awards, and the companies that win are the ones already flying. That distinction is what most of this category’s marketing obscures, and it is the first thing we score for: fielded hardware with operational hours beats a rendering and a roadmap, almost regardless of how good the roadmap is.
The second thing we score for is whether the mission is a durable budget line or a spike. Contested logistics, counter-UAS and space-based ISR are structural; several adjacent categories are not.
If you have built in this sector, you will disagree with some of these scores. That is the point of publishing them.
41 companies, ranked. Scores run 0–100 across market, team, product, moat and traction — our own view, not a consensus.
Ultra-thin TMD solar cells with 32% higher efficiency and extreme radiation hardness for space.
Software-defined precision factories producing mission-critical metal parts for rockets, satellites, jets and defense systems.
Last-mile in-space transportation — orbital transfer vehicles that deliver payloads from drop-off orbit to their final destination.
Intelligent power processing units enabling satellites, propulsion, and in-space manufacturing.
Off-road ground autonomy for the US military — $100M raised and a Marine Corps production contract in hand.
Solar power satellites beaming near-infrared energy to existing terrestrial solar farms 24/7.
Autonomous threat detection and response for military networks.
Long-range autonomous VTOL cargo aircraft flying for the US Air Force, US Navy, Japan's Self-Defense Forces and ANA — hybrid-electric, 1,000-mile class.
European strike drones and loitering munitions — €500M raised from Sequoia and Founders Fund inside two years of founding.
Radiation-hardened neuromorphic compute modules enabling autonomous decision-making on cubesat-scale spacecraft.
European UAS unicorn — maritime and land surveillance drones with a combat record in Ukraine and UK government backing.
Building Haven-1, positioned to be the world's first commercial space station, ahead of ISS retirement.
Decentralized rooftop drone detection network securing critical infrastructure from rogue UAS.
Building the world's first Moon hotel using inflatable habitats and lunar ISRU.
End-to-end mission provider — designs, builds and operates custom LEO satellite constellations as a service.
AI-native autonomous foundries rebuilding the American maritime industrial base.
Adaptive thermal materials and ASTRID active thermal tape enabling rapid satellite integration.
Orbital platform hosting 1,200 kg of swappable payloads for the new space economy.
Autonomous electric aircraft for crop protection, cargo logistics, and contested logistics.
Europe's best-funded private launch company — the Spectrum rocket, built for sovereign European access to orbit.
Nyx — a reusable European cargo capsule for low Earth orbit, lunar orbit and the lunar surface.
Dream Chaser and LIFE — commercial space transportation and habitation.
Autonomous drones with best-in-class AI obstacle avoidance for defense and public safety.
Robotic construction syndicate delivering autonomous real estate and industrial defense infrastructure.
Deployable solar arrays that launch compactly and unfurl to football-field scale in orbit.
Space-based data centers using orbital compute infrastructure for AI workloads.
Europe's unmanned ground vehicle specialist — modular robotic platforms and an autonomy OS for land forces.
Spain's reusable small launcher — Miura 5, targeting up to 30 missions a year from multiple spaceports.
Operator-in-the-loop drone autonomy — combat-tested indoor and urban systems from Israeli operational use.
Robotic gun turrets that shoot down drones with bullets — counter-UAS at a cost per kill that missiles cannot match.
Autonomous underwater vehicles for subsea domain awareness.
Low-cost autonomous underwater vehicles for persistent access to the deep ocean — WHOI and NASA JPL heritage, sub-$200K unit cost.
India's leading private launch company — the Vikram rocket family, built on ISRO engineering lineage at Indian cost structures.
Air-breathing electric propulsion satellite bus for very low Earth orbit — flying at 180–250 km, where drag kills conventional spacecraft, to get sub-30 cm imaging.
AI command-and-control software for European militaries — faster decision cycles at the headquarters layer.
AI-native munitions manufacturing for the US military.
3D-printed rockets for the medium-lift commercial launch market.
Returnable in-space manufacturing platforms for semiconductor materials that cannot be made under gravity.
Fully and rapidly reusable rockets — every part, every flight.
Mass-manufacturable small AUVs — underwater autonomy priced for attrition rather than for flagship programmes.
Kinetic launch system using a pneumatic cannon to accelerate payloads to orbit at a fraction of rocket cost.
Scores are ours and deliberately harsh at the top — very few companies clear 80. A company appears only if it carries analyst enrichment and a score; the raw sourcing tail is excluded. Many companies in this set are export-controlled, and nothing on this page implies availability.
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Research only. Nothing here is an offer or solicitation to buy any security. No deal terms, valuations, round sizes or allocations appear on this page, and inclusion does not mean a company is raising or that Alphaneo can offer access to it. Scores are Alphaneo’s own assessment as of Aug 14, 2026, are not investment advice, and are not independently verified. Named investors are drawn from public announcements. Private investments are illiquid and may lose their entire value.