Alternatives to Portal Space Systems
The top SpaceTech companies similar to Portal Space Systems, ranked by relevance (named competitors first, then how closely their sectors overlap) and our 0-100 AI-readiness score. Each links to a full profile with funding and team.
Airbus Zephyr85Defense TechPortsmouth, United Kingdom$202.4M- STStoke77AerospaceKent, United States$1.3B
Rocket Lab75SpaceTechLong Beach, United States$2.1B
Peraton73Defense TechHerndon, United States$3.7B
URSA MAJOR71Defense TechBerthoud, United States$193.0M
Loft Orbital70SpaceTechSan Francisco, United States$326.0M- SPSpire Global70SpaceTechVienna, United States$1.2B
ArianeGroup64SpaceTechParis, France$95.0M
Observable Space64AerospaceAdrian, United States$101.0M
Kinova Robotics63RoboticsBoisbriand, Canada$151.0M
BLUE CANYON TECHNOLOGIES63SpaceTechBoulder, United States
Firefly Aerospace62SpaceTechCedar Park, United States$1.4B
Redwire61AerospaceJacksonville, USA$63.0M- TRTrue Anomaly61Defense TechDenver, United States$650.0M
- ICICEYE60SpaceTechEspoo, Finland$750.0M
- HAHawkEye 36060Defense TechHerndon, United States$373.0M
TERRAN ORBITAL59SpaceTechBoca Raton, United States$391.4M
MAGDRIVE55SpaceTechHarwell, United Kingdom$12.5M- AGAGILE Space Industries54SpaceTechLoveland, United States
- FIFirehawk Aerospace54SpaceTechHawthorne, United States$63.5M
Wind Capital54Venture CapitalParis, France$57.2M
Momentus54SpaceTechSanta Clara, United States$201.0M
MORPHEUS SPACE53SpaceTechPotsdam, Germany$20.0M
COGNITIVE SPACE52SpaceTechDenver, United States$10.0M
Space Dots51SpaceTechLondon, United Kingdom$4.9M
Antares Industries49Nuclear EnergyLos Angeles, United States- PHPHASEFOUR48SpaceTechRedondo Beach, United States
ANTARIS46SpaceTechPalo Alto, United States
ENPULSION45AerospaceWiener Neustadt, Austria$4.2M
L3Harris Technologies43AerospaceMelbourne, United States
Stardust Labs42SpacePalo Alto, United States
StellarNav41SpaceTechPalo Alto, United States$15.0M- KRKratos Defense40Defense TechSan Diego, United States
- SPSpaceFlux37SpaceTechPalo Alto, United States$6.8M
- VIVIRIDIAN32SpaceTechPalo Alto, United States$10.0M
- ARArkadia Space28AerospaceSpain$14.5M
Northrop Grumman Systems26Defense TechFalls Church, United States$7.4B
Aemetis15Climate TechCupertino, United States
SASMOS HET TECHNOLOGIES PRIVATE LIMITES11Defense TechBengaluru, India
Charter10SpaceTechDenver, United States$1.0M- AEAechelon10AerospaceMontreal, Canada
- AGAgnia Aerospace9AerospaceLondon, United Kingdom
- MDMDA8SpaceTechBrampton, Canada
- MDMDA Space6SpaceTechBrampton, Canada
Gilat Satellite NetworksSpaceTechPetah Tikva, Israel
CamberDefense TechArlington, United States
ThalesAerospaceParis, France
Palantir Technologies85Data IntegrationDenver, United States$2.6B
Anduril Industries77Defense TechCosta Mesa, United States$8.2B
Starlink77SpaceTechHawthorne, United States$2.2B
SpaceX75SpaceTechStarbase, United States$10.0B- RTRTX75AerospaceArlington, United States
- HAHANWHA75ConglomerateSeoul, South Korea
General Dynamics71AerospaceReston, United States$60.0B
Axelspace70AerospaceTokyo, Japan$63.0M
Ligado Networks70SatelliteReston, United States$4.0B- AMAmazon.com70E-commerceSeattle, United States$8.2B
Silvus Technologies69DefenseLos Angeles, USA$163.0M
Helicopters/Planes68Aviation TechnologyLos Angeles, United States$615.0M
Axiom Space68SpaceTechHouston, United States$943.0M
| Company | Sector | HQ | Funding | Score |
|---|---|---|---|---|
| Airbus Zephyr | Defense Tech | Portsmouth, United Kingdom | $202.4M | 85 |
| STStoke | Aerospace | Kent, United States | $1.3B | 77 |
| Rocket Lab | SpaceTech | Long Beach, United States | $2.1B | 75 |
| Peraton | Defense Tech | Herndon, United States | $3.7B | 73 |
| URSA MAJOR | Defense Tech | Berthoud, United States | $193.0M | 71 |
| Loft Orbital | SpaceTech | San Francisco, United States | $326.0M | 70 |
| SPSpire Global | SpaceTech | Vienna, United States | $1.2B | 70 |
| ArianeGroup | SpaceTech | Paris, France | $95.0M | 64 |
| Observable Space | Aerospace | Adrian, United States | $101.0M | 64 |
| Kinova Robotics | Robotics | Boisbriand, Canada | $151.0M | 63 |
| BLUE CANYON TECHNOLOGIES | SpaceTech | Boulder, United States | — | 63 |
| Firefly Aerospace | SpaceTech | Cedar Park, United States | $1.4B | 62 |
| Redwire | Aerospace | Jacksonville, USA | $63.0M | 61 |
| TRTrue Anomaly | Defense Tech | Denver, United States | $650.0M | 61 |
| ICICEYE | SpaceTech | Espoo, Finland | $750.0M | 60 |
| HAHawkEye 360 | Defense Tech | Herndon, United States | $373.0M | 60 |
| TERRAN ORBITAL | SpaceTech | Boca Raton, United States | $391.4M | 59 |
| MAGDRIVE | SpaceTech | Harwell, United Kingdom | $12.5M | 55 |
| AGAGILE Space Industries | SpaceTech | Loveland, United States | — | 54 |
| FIFirehawk Aerospace | SpaceTech | Hawthorne, United States | $63.5M | 54 |
| Wind Capital | Venture Capital | Paris, France | $57.2M | 54 |
| Momentus | SpaceTech | Santa Clara, United States | $201.0M | 54 |
| MORPHEUS SPACE | SpaceTech | Potsdam, Germany | $20.0M | 53 |
| COGNITIVE SPACE | SpaceTech | Denver, United States | $10.0M | 52 |
| Space Dots | SpaceTech | London, United Kingdom | $4.9M | 51 |
| Antares Industries | Nuclear Energy | Los Angeles, United States | — | 49 |
| PHPHASEFOUR | SpaceTech | Redondo Beach, United States | — | 48 |
| ANTARIS | SpaceTech | Palo Alto, United States | — | 46 |
| ENPULSION | Aerospace | Wiener Neustadt, Austria | $4.2M | 45 |
| L3Harris Technologies | Aerospace | Melbourne, United States | — | 43 |
| Stardust Labs | Space | Palo Alto, United States | — | 42 |
| StellarNav | SpaceTech | Palo Alto, United States | $15.0M | 41 |
| KRKratos Defense | Defense Tech | San Diego, United States | — | 40 |
| SPSpaceFlux | SpaceTech | Palo Alto, United States | $6.8M | 37 |
| VIVIRIDIAN | SpaceTech | Palo Alto, United States | $10.0M | 32 |
| ARArkadia Space | Aerospace | Spain | $14.5M | 28 |
| Northrop Grumman Systems | Defense Tech | Falls Church, United States | $7.4B | 26 |
| Aemetis | Climate Tech | Cupertino, United States | — | 15 |
| SASMOS HET TECHNOLOGIES PRIVATE LIMITES | Defense Tech | Bengaluru, India | — | 11 |
| Charter | SpaceTech | Denver, United States | $1.0M | 10 |
| AEAechelon | Aerospace | Montreal, Canada | — | 10 |
| AGAgnia Aerospace | Aerospace | London, United Kingdom | — | 9 |
| MDMDA | SpaceTech | Brampton, Canada | — | 8 |
| MDMDA Space | SpaceTech | Brampton, Canada | — | 6 |
| Gilat Satellite Networks | SpaceTech | Petah Tikva, Israel | — | — |
| Camber | Defense Tech | Arlington, United States | — | — |
| Thales | Aerospace | Paris, France | — | — |
| Palantir Technologies | Data Integration | Denver, United States | $2.6B | 85 |
| Anduril Industries | Defense Tech | Costa Mesa, United States | $8.2B | 77 |
| Starlink | SpaceTech | Hawthorne, United States | $2.2B | 77 |
| SpaceX | SpaceTech | Starbase, United States | $10.0B | 75 |
| RTRTX | Aerospace | Arlington, United States | — | 75 |
| HAHANWHA | Conglomerate | Seoul, South Korea | — | 75 |
| General Dynamics | Aerospace | Reston, United States | $60.0B | 71 |
| Axelspace | Aerospace | Tokyo, Japan | $63.0M | 70 |
| Ligado Networks | Satellite | Reston, United States | $4.0B | 70 |
| AMAmazon.com | E-commerce | Seattle, United States | $8.2B | 70 |
| Silvus Technologies | Defense | Los Angeles, USA | $163.0M | 69 |
| Helicopters/Planes | Aviation Technology | Los Angeles, United States | $615.0M | 68 |
| Axiom Space | SpaceTech | Houston, United States | $943.0M | 68 |