Company - SmalSspark Space Systems
Product/Service - S4-SLV
- Classification
- In-Space Transportation
- Category
- Transport Service (LEO-Moon)
Space Tug
Transport Service (LEO-GEO)
Orbital Transportation
- Fields
- In-Space Transportation
- Status
- Dormant, Concept
- First launch
- Not announced
Status Comment
Website is offline as of August 2025. Seems to have completely closed as of August 2025. The S4-SLV lunar space tug was been removed from the website as of February 2024, thus the "Concept" status. Company is active but the Mission Management Suite and CIPHER avionics are out-of-scope for this database.
Notes
- Seems to have pivoted from a small launcher to in-space transportation for the Moon and as of early 2024 to mission planning software and payload interface modules.
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Starship, Starship HLS, Starship Human Landing System
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Concept
OSSIE, LUCAS
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ACES
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NEMO
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Quark
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Pushpak
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SpaceDrone
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Blue Ring
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Square Rocket
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Space Tug, Transport Service (LEO-GEO), Transport Service (LEO-Moon), In-Space Logistics
Dormant
ClearSpace-1
Active Debris Removal (ADR), Space Tug, Robotic Arm
Development
Transport Service (LEO-GEO), Space Tug
Development
Rover, Transport Service (LEO-Moon), ISRU (In Situ Resource Utilization), Space Tug, In-Space Logistics
Concept
ION, GEA
Space Tug, In-Orbit Computing, Transport Service (Earth-LEO), Orbital Transportation, In-Space Logistics, On-Orbit Servicing
Active
Active Debris Removal (ADR), Space Tug, Orbital Transportation
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LOOP
Propellant Refuel Station, Propellant Refilling, Space Tug, Orbital Transportation
Development
Deep Space Industries
Xplorer, Prospector-1
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Space Tug, In-Space Logistics, Orbital Transportation
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Elytra, SUV (Space Utility Vehicle)
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Dormant
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Hyperion
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Hyscab
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Mira, LEO Express, Helios, Caravan
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ARCap Module
On-Orbit Servicing, Transport Service (LEO-GEO), Active Debris Removal (ADR), In-Orbit Inspection, Space Tug, Hardware, Docking
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Orbiter
Space Tug, Transport Service (Earth-LEO)
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Motus
Space Tug, Orbital Transportation
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Space Tug, In-Space Communications Relay, Transport Service (LEO-Moon)
Early stage
VIA
Space Tug, Transport Service (Earth-LEO), Orbital Transportation, Hardware, Software
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Colibri
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Vigoride
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Space Tug, In-Space Logistics
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SUPREME
Hardware, Space Tug, In-Space Logistics
Development, ?
Orbital Transportation, Transport Service (LEO-GEO), Reusable Satellite, Space Tug, Space Situational Awareness (SSA), In-Orbit Inspection
Development
Satko
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Space Tug, In-Space Logistics
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Space Truck
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Supernova
Orbital Transportation, Transport Service (LEO-GEO), Space Tug
Development
Photon
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IOSHEXA
Space Tug, Transport Service (Earth-LEO), Active Debris Removal (ADR)
Development, ?
AstroLab
Space Tug, Active Debris Removal (ADR), On-Orbit Servicing, In-Space Logistics
Dormant, Early stage
Meteoroid Complementary Descent Module, ASTREO
Space Tug, Transport Service (Re-Entry), In-Space Logistics
Concept
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Development
Modular Transport System (MTS)
Space Tug, Transport Service (Earth-LEO), Transport Service (LEO-GEO), Transport Service (LEO-Moon)
Concept
Commercial Space Station, Space Tug, Space Tourism Activities, Space Solar Power
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Longbow
Space Tug, In-Space Logistics, Mass Driver
Development
OT-S, Optimus-1
Space Tug, In-Space Manufacturing, In-Space Logistics, Transport Service (LEO-GEO), In-Space Mobility, Active Debris Removal (ADR), In-Space Assembly, Space Situational Awareness (SSA)
Development, Launched
Orbital Logistics Vehicle (OLV), m-OLV
In-Space Manufacturing, In-Space Assembly, Space Tug, Transport Service (LEO-GEO), Lunar Electric Grid, Power Beaming
Development
Smart Drone
Space Tug, Orbital Transportation, On-Orbit Servicing, Active Debris Removal (ADR), Robotic Arm
Early stage
SHERPA
Space Tug, In-Space Logistics
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Black Bay
Space Tug, Transport Service (LEO-GEO), Orbital Transportation, Propellant Refilling, Propellant Refuel Station, Reusable Satellite
Dormant, Bankrupt
Space Tug, In-Space Logistics, Active Debris Removal (ADR)
Early stage
STRANNIK-1, STRANNIK-2
Space Tug, Transport Service (LEO-GEO), Transport Service (LEO-Moon)
Cancelled
Otter
Space Tug, On-Orbit Servicing, Satellite Life Extension, Active Debris Removal (ADR), Transport Service (LEO-GEO), Hardware
Development, Launched
Start, Cis-Lunar Transfer Vehicle (CLTV), IMAGIN-e
Space Tug, On-Orbit Servicing, Propellant Refilling, Propellant Refuel Station, In-Orbit Computing
Development
Worker Bee, Sutter Space Telescope
Space Tug, Space Situational Awareness (SSA), Resources - Asteroid Mining, Propellant Refuel Station, Space Mining, In-Space Manufacturing, ISRU (In Situ Resource Utilization), Propellant Refilling, Active Debris Removal (ADR)
Development
LOLA
Space Tug, In-Space Logistics
Early stage
ACES
Transport Service (LEO-Moon), Commercial Lunar Lander, Space Tug, In-Space Logistics
Concept
XCRAFT
Space Tug, In-Space Logistics, Beyond-LEO Remote Sensing
Cancelled, Launched
Transport Service (LEO-GEO), Orbital Transportation, In-Space Logistics, Space Tug
Early stage
Blue Ring
Transport Service (Earth-LEO), Transport Service (LEO-GEO), Persistent Platform, Space Tug, Robotic Space Station, In-Space Logistics, Space Logistics Platform, In-Orbit Computing, In-Space Mobility, In-Space Communications Relay
Development
Space Tug, Transport Service (LEO-GEO), Transport Service (LEO-Moon), In-Space Logistics
Dormant
Transport Service (LEO-GEO), Space Tug
Development
Transport Service (LEO-GEO), Orbital Transportation, Nuclear Fission Power
Development
Elytra, SUV (Space Utility Vehicle)
Space Tug, Transport Service (LEO-GEO), Orbital Transportation, Beyond-LEO Remote Sensing
Development
FutureX
Transport Service (LEO-GEO), Orbital Transportation
Development
Transport Service (LEO-GEO), Orbital Transportation
Early stage
KLNR-LEO
Transport Service (LEO-GEO), Active Debris Removal (ADR)
Dormant
Transport Service (LEO-GEO), Transport Service (LEO-Moon), Active Debris Removal (ADR)
Development, Launched
Orbital Transportation, In-Space Manufacturing, ISRU (In Situ Resource Utilization), Transport Service (LEO-GEO), Space Tug
Development
Space Tug, Transport Service (LEO-GEO)
Dormant
Transport Service (LEO-GEO), Orbital Transportation
Early stage
Nebula
Orbital Transportation, Transport Service (LEO-GEO)
Development
ARCap Module
On-Orbit Servicing, Transport Service (LEO-GEO), Active Debris Removal (ADR), In-Orbit Inspection, Space Tug, Hardware, Docking
Development
Economical Transfer Vehicle (ETV)
Transport Service (LEO-GEO), Orbital Transportation, In-Space Logistics
Early stage
Transport Service (LEO-GEO), In-Space Logistics
Concept
Transport Service (LEO-GEO), Orbital Transportation, In-Space Logistics, Propellant Refilling, Propellant Refuel Station
Early stage
Orbital Transportation, Transport Service (LEO-GEO), Reusable Satellite, Space Tug, Space Situational Awareness (SSA), In-Orbit Inspection
Development
Transport Service (LEO-GEO), Orbital Transportation, Active Debris Removal (ADR)
Development
Space Tug, Transport Service (LEO-GEO)
Cancelled
Supernova
Orbital Transportation, Transport Service (LEO-GEO), Space Tug
Development
Ranger
Transport Service (LEO-Moon), In-Space Communications Relay, In-Space Manufacturing, On-Orbit Servicing, In-Orbit Inspection, Beyond-LEO Remote Sensing, In-Space Logistics, Transport Service (LEO-GEO), Satellite Life Extension
Development, Launched
Redshift
Transport Service (Earth-LEO), Transport Service (LEO-GEO), Transport Service (LEO-Moon)
Development
Space Tug
Space Tug, Transport Service (LEO-GEO)
Development
Modular Transport System (MTS)
Space Tug, Transport Service (Earth-LEO), Transport Service (LEO-GEO), Transport Service (LEO-Moon)
Concept
OT-S, Optimus-1
Space Tug, In-Space Manufacturing, In-Space Logistics, Transport Service (LEO-GEO), In-Space Mobility, Active Debris Removal (ADR), In-Space Assembly, Space Situational Awareness (SSA)
Development, Launched
Propellant Refilling, Propellant Refuel Station, Transport Service (LEO-GEO)
Early stage
Orbital Logistics Vehicle (OLV), m-OLV
In-Space Manufacturing, In-Space Assembly, Space Tug, Transport Service (LEO-GEO), Lunar Electric Grid, Power Beaming
Development
Black Bay
Space Tug, Transport Service (LEO-GEO), Orbital Transportation, Propellant Refilling, Propellant Refuel Station, Reusable Satellite
Dormant, Bankrupt
Transport Service (LEO-GEO), Orbital Transportation, In-Space Logistics
Early stage
STRANNIK-1, STRANNIK-2
Space Tug, Transport Service (LEO-GEO), Transport Service (LEO-Moon)
Cancelled
Transport Service (LEO-GEO)
Early stage
Otter
Space Tug, On-Orbit Servicing, Satellite Life Extension, Active Debris Removal (ADR), Transport Service (LEO-GEO), Hardware
Development, Launched
Microgravity Flight Service (LEO), Microgravity Flight Service (Reusable Satellite), Robotic Space Station, Microgravity Research Payloads, In-Space Manufacturing, Orbital Transportation, Transport Service (LEO-GEO)
Development
Space Tug, Orbital Transportation
Concept
Transport Service (LEO-GEO), Orbital Transportation, In-Space Logistics, Space Tug
Early stage
Astris, Susie
Space Tug, Orbital Transportation, Space Situational Awareness (SSA)
Development
Pushpak
Space Tug, Orbital Transportation
Development
ION, GEA
Space Tug, In-Orbit Computing, Transport Service (Earth-LEO), Orbital Transportation, In-Space Logistics, On-Orbit Servicing
Active
Active Debris Removal (ADR), Space Tug, Orbital Transportation
Development
Transport Service (LEO-GEO), Orbital Transportation, Nuclear Fission Power
Development
LOOP
Propellant Refuel Station, Propellant Refilling, Space Tug, Orbital Transportation
Development
Space Tug
Space Tug, Orbital Transportation
Dormant
SpaceVan, spacedrop
Space Tug, In-Space Logistics, Orbital Transportation
Demonstrated
Elytra, SUV (Space Utility Vehicle)
Space Tug, Transport Service (LEO-GEO), Orbital Transportation, Beyond-LEO Remote Sensing
Development
FutureX
Transport Service (LEO-GEO), Orbital Transportation
Development
Transport Service (LEO-GEO), Orbital Transportation
Early stage
Orbital Transportation, In-Space Manufacturing, ISRU (In Situ Resource Utilization), Transport Service (LEO-GEO), Space Tug
Development
On-Orbit Servicing, Space Tug, Orbital Transportation
Development, Launched
Orbital Transportation, Space Tug
Development
Nuclear Fission Power, Orbital Transportation, Resources - Energy, Hardware, Transport Service (LEO-Moon)
Development
Hyperion
Transport Service (Re-Entry), Transport Service (LEO-Moon), Commercial Lander, Commercial Lunar Lander, Space Tug, Orbital Transportation
Early stage
Hyscab
Space Tug, Orbital Transportation
Early stage
Phoenix Orbital Transfer Vehicle
In-Space Manufacturing, Orbital Transportation, Space Tug, Microgravity Flight Service (LEO)
Concept
Transport Service (LEO-GEO), Orbital Transportation
Early stage
Nebula
Orbital Transportation, Transport Service (LEO-GEO)
Development
Motus
Space Tug, Orbital Transportation
Development, Launched
VIA
Space Tug, Transport Service (Earth-LEO), Orbital Transportation, Hardware, Software
Cancelled, Concept, Pivot
DEORBIT
Active Debris Removal (ADR), On-Orbit Servicing, In-Space Assembly, Orbital Transportation
Development
Economical Transfer Vehicle (ETV)
Transport Service (LEO-GEO), Orbital Transportation, In-Space Logistics
Early stage
Resources - Energy, Nuclear Fission Power, Orbital Transportation
Concept
Transport Service (LEO-GEO), Orbital Transportation, In-Space Logistics, Propellant Refilling, Propellant Refuel Station
Early stage
Orbital Transportation, Transport Service (LEO-GEO), Reusable Satellite, Space Tug, Space Situational Awareness (SSA), In-Orbit Inspection
Development
Robotic Arm, Robot Astronaut, Space Robotics, Hardware, Orbital Transportation, On-Orbit Servicing
Early stage
Transport Service (LEO-GEO), Orbital Transportation, Active Debris Removal (ADR)
Development
Space Mining, Resources - Asteroid Mining, Orbital Transportation
Early stage
Space Truck
Space Tug, On-Orbit Servicing, In-Space Manufacturing, In-Space Assembly, Transport Service (Re-Entry), Orbital Transportation
Cancelled, Development
Supernova
Orbital Transportation, Transport Service (LEO-GEO), Space Tug
Development
Orbots
Space Robotics, On-Orbit Servicing, Orbital Transportation
Development, Launched
Smart Drone
Space Tug, Orbital Transportation, On-Orbit Servicing, Active Debris Removal (ADR), Robotic Arm
Early stage
Black Bay
Space Tug, Transport Service (LEO-GEO), Orbital Transportation, Propellant Refilling, Propellant Refuel Station, Reusable Satellite
Dormant, Bankrupt
Resources - Asteroid Mining, Space Mining, ISRU (In Situ Resource Utilization), Commercial Rover, Orbital Transportation
Early stage
Transport Service (LEO-GEO), Orbital Transportation, In-Space Logistics
Early stage
Microgravity Flight Service (LEO), Microgravity Flight Service (Reusable Satellite), Robotic Space Station, Microgravity Research Payloads, In-Space Manufacturing, Orbital Transportation, Transport Service (LEO-GEO)
Development
ROAMER
On-Orbit Servicing, Hardware, Orbital Transportation, Robotic Arm, In-Space Assembly
Early stage
Pylon
Resources - Energy, Nuclear Fission Power, Commercial Rover, Orbital Transportation
Cancelled