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Design the future with additive manufacturing.

Software built on transformative technology

Design technology that will not break.

Remove design limitations and overcome fundamental challenges with our unique modeling engine.

Your data goes in; optimized designs come out.

Feed your design workflows with real-world data, physics, and logic to harness the power of implicit modeling.

Build processes, not just parts.

Create reusable workflows and algorithmic processes that save you time and empower your team to scale.

Solve your toughest design challenges.


Decrease weight while meeting your structural requirements to improve performance.

Easy in. Easy out.

Seamlessly import and export data within your existing workflows.


Upload CAD files and other engineering data.

STEP (.step), Parasolid (.x_t and .x_b), CATIA (.CATPart, CATProduct), Solidworks (.sldprt, .sldasm), Creo (.prt, .asm), NX (.prt), Inventor (.ipt, .iam), ACIS (.sat,.sab)

STL (.stl), OBJ (.obj), Polygon File Format (.ply), 3D Manufacturing Format (.3mf)

Abaqus(*.inp), ANSYS (.cdb, .msh, .rst, .rth, .cas, .dat), LS-DYNA (.k) NASTRAN (.bdf, .op2), Patran(.pat), CGNS, (.cgns), Universal File Format (.unv), Topology Optimization Result (.op2)

Common Layer Interface (.cli)

Bitmap (.png), Point Data (.csv), Vector and Scalar Point Maps (.csv), Voxel Grid (.vdb)


Create high-performance geometries.

Lattice Structures
Volume and surface lattices. Graph, TPMS, and custom unit cells. Stochastic structures. Rib grids.

Topology Optimization
Multi-objective and multi-constrain optimization. Automated post-processing.

Advanced Modeling
Variable shelling and offsets. Fillets and smoothening. Boolean operations.

Design Analysis
Built-in structural and thermal FEA. Import, conversion, and exchange utilities.

Build Preparation
Part orientation. Support structure generation.


Convert to the format you need.

STEP (.step), Parasolid (.x_t and .x_b), IGES (.iges)

STL (.stl), OBJ (.obj), Polygon File Format (.ply), 3D Manufacturing Format (.3mf)

Abaqus (.inp), ANSYS (.cdb), Nastran (.bdf), LS-Dyna (.k), Universal (.unv), Patran (.pat), Fluent (.msh)

Common Layer Interface (.cli), Common Layer File (.clf), Renishaw Point Data (.csv), Renishaw CLI (.cli), Arcam ABF (.abf), Stratasys Layer (.ssl), EOS CLI (.cli), BW image stacks (.png), 3D Systems (.slc), ConceptLaser Slice v4 (.cls)

nTop Implicit File (.implicit), Point Data (.csv), Vector and Scalar Point Maps (.csv), Voxel Grid (.vdb)


Integrate with your existing software stack.

nTop Automate
Using nTop Automate, you can write custom code to execute nTop workflows through a programmatic environment.

Leverage reference integrations and the nTop PLM connector to integrate nTop into your system.

Integrate with popular multidisciplinary design optimization platforms, including ModeFrontier, ModelCenter, and ProcesComposer.

Join the cutting edge of your industry.

Aerospace and defense

Develop lighter, better-performing, more innovative parts that take full advantage of additive manufacturing.

Every single pound of material you can remove from a spacecraft saves money on launch costs. That’s why we used nTop to optimize the design.

James Horton

Mission Architect

Aerojet Rocketdyne

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Get high-performance, additively manufactured parts on cars and stay ahead of the competition.

The power and flexibility of nTop enabled us to manage the complexity of the DfAM process and grasp the concrete advantages of additive manufacturing.

Francesco Leonardi



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Medical devices

Transform the standard of care by minimizing design time, automating validated workflows, and improving ergonomics.

This product has been hugely successful for us, and this is definitely in part due to the lattice structure that was created by nTop.

Image showing SI BONE implants

Beth Stuart

Senior Design Engineer


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Consumer products

Get to market fast with head-turning 3D-printed products and define the cutting edge without the tedious manual work.

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nTop has the capabilities you need to unlock what’s possible with additive manufacturing.

Aerojet Rocketdyne logo

Light, reliable quad thruster enables low-cost space exploration

Aerojet Rocketdyne used nTop’s shell-and-infill latticing capability to develop a RCS quad thruster that is 67% lighter and 66% less expensive than competing solutions.

Ready to get started?

See for yourself why leading companies in the aerospace, automotive, medical, and consumer products industries have chosen nTop as their engineering software solution.