Boston
32 companies · 19 sectors · 5 investors
MIT moved to Cambridge in 1916, and many of the region's hard tech companies started in its labs. Commonwealth Fusion Systems is building a tokamak fusion machine in Devens, and Boston Metal makes steel through molten oxide electrolysis instead of a blast furnace. Boston Dynamics builds legged and warehouse robots in Waltham.
Open Boston on the map →What's being built in Boston
Recently on the Wire
Apollo Atomics raises a $31M seed to build pressurized-water reactors on a factory line
Funding·Aug 20, 2026·Apollo Atomics (PR Newswire)
Form Energy raises a $750M Series G to scale iron-air battery production in West Virginia
Funding·Aug 12, 2026·Form Energy
Commonwealth Fusion Systems raises another $1B, taking its total to $4B
Funding·Jul 30, 2026·Commonwealth Fusion Systems
Walden Robotics emerges from stealth with $300M at a $1.1B valuation to deploy general-purpose robots
Funding·Jul 15, 2026·Walden Robotics (BusinessWire) / Bloomberg
Investors based in Boston
All 32 companies
AM BatteriesBoston
Energy·Manufacturing
Dry-electrode manufacturing for battery cells
Apollo AtomicsCambridge
Nuclear·Energy
Compact pressurized water reactors built in a factory
Blue Water AutonomyBoston
Maritime·Defense
Uncrewed ocean-going ships for the Navy
Boston DynamicsWaltham
Robotics·AI
Legged robots and warehouse robots for industrial work
Boston MetalWoburn
Materials·Energy·Manufacturing
Molten oxide electrolysis for steel and critical metals
Commonwealth Fusion SystemsDevens
Nuclear·Energy
Tokamak fusion power plants and superconducting magnets
CorridianBoston
Robotics·Defense·Aerospace
DiffraqtionSomerville
Space·Sensors·Optics
Quantum cameras for satellites and ISR
Electric HydrogenDevens
Energy·Manufacturing
Industrial-scale PEM electrolyzer plants for green hydrogen
Enigma AerospaceBoston
Aerospace·Defense
Long-range autonomous aircraft for contested missions
FabriBillerica
Manufacturing·Materials
Rapid metal investment castings for aerospace and industry
Form EnergySomerville
Energy·Manufacturing
Iron-air batteries for multi-day grid energy storage
FormlabsBoston
Manufacturing
Resin and powder 3D printers and materials
HumaticsBoston
Sensors·Robotics
Spatial positioning software for robotic work cells
Indigo AgBoston
Biotech·Energy
Locus RoboticsWilmington
Robotics·Logistics
Autonomous mobile robots for warehouse order picking
LumafieldCambridge
Software·Manufacturing
CT scanners and software for manufacturing quality
MarkforgedWaltham
Manufacturing
Industrial 3D printers for metal and composite parts
Merlin LabsBoston
Aerospace·AI
Autonomous flight systems for military aircraft
Raptor MapsSomerville
Energy·AI
Inspection and maintenance software for solar farms
Re:Build ManufacturingFramingham
Manufacturing·Defense·Aerospace
Engineering and contract manufacturing for product companies
Sea Machines RoboticsBoston
Maritime·Robotics·AI
Autonomy systems for commercial and defense vessels
Seurat TechnologiesWilmington
Manufacturing·Materials
Metal 3D printed parts made with laser area printing
Specter AerospacePeabody
Aerospace·Defense
Air-breathing hypersonic vehicles and propulsion
Sublime SystemsSomerville
Materials·Energy·Construction
Low-carbon cement made electrochemically without kilns
TeralinkBoston
Communications·Space·Drones
High-speed communication systems for satellites and drones
Tomorrow.ioBoston
Space·Sensors·AI
Weather intelligence software and weather satellites
Tutor IntelligenceWatertown
Robotics·AI·Manufacturing
AI-driven robot arms for warehouse picking and palletizing
Via SeparationsWatertown
Energy·Materials
VulcanFormsDevens
Manufacturing·Defense·Aerospace
Digital factories making metal parts by laser 3D printing
Walden RoboticsCambridge
Robotics·AI·Manufacturing
General-purpose robots for manufacturing and logistics
ZydroNewton
Maritime·Robotics
Autonomy kits that turn ordinary boats into uncrewed vessels