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Manufacturing · head to head

Formlabs PreForm vs nTop

Formlabs PreForm logo

Formlabs PreForm

Manufacturing

Free print preparation software that only drives Formlabs printers, because the money is in hardware and resin

From
Free
Rated
-
Full reviewWebsite
nTop logo

nTop

CAD

Implicit computational design for lattices, heat exchangers and topology-driven parts

From
On request
Rated
-
Full reviewWebsite

The short version

  • Only Formlabs PreForm has a free tier, so it costs nothing to try first.
  • Each has a real cost: Formlabs PreForm preForm only drives Formlabs printers, so the free software is really an entry cost to a closed hardware and resin ecosystem rather than a tool you can keep if you change machines.; nTop nTop is a specialist tool that sits alongside mainstream CAD rather than replacing it, so you pay for an extra seat and accept a handoff between two geometry systems.
  • They diverge on capability: Formlabs PreForm covers Automatic orientation, nTop covers Implicit modelling.
  • Prices and features above were last checked on 31 August 2026.

Where they differ

Only the attributes on which Formlabs PreForm and nTop actually diverge.

Attributes where Formlabs PreForm and nTop differ
AttributeFormlabs PreFormnTop
Starting priceFreeOn request
Pricing modelFree with a Formlabs printerquote
Free tierYesNo
PlatformsWindows, macOSWindows, Cloud
CategoryManufacturingCAD

Identical on both: user rating (Not yet rated).

What each one covers

Drawn from each product's published feature list. An absence here means we hold no record of it - not that the product lacks it.

Only in Formlabs PreForm

  • Automatic orientation
  • Support generation
  • One-click print
  • Material presets
  • Dashboard
  • Fleet Control

Only in nTop

  • Implicit modelling
  • Lattice and cellular structures
  • Field-driven design
  • Integrated simulation
  • Reusable workflows
  • Topology optimisation
  • CAD and AM interoperability

What people use each for

The jobs each tool is most often brought in to do.

Formlabs PreForm

  • A dental laboratory preparing surgical guides on a validated resin and printer combinationnot nTop
  • A prototyping team running several Form printers that needs job queueing and usage trackingnot nTop
  • A jewellery workshop laying out castable patterns to maximise parts per buildnot nTop
  • An education lab that needs software with no per-student licence costnot nTop

nTop

  • Designing a variable-density lattice bracket where mass must drop without losing stiffness in the loaded regionsnot Formlabs PreForm
  • Generating a heat exchanger with thousands of internal channels that a conventional CAD kernel cannot representnot Formlabs PreForm
  • Producing patient-specific implant geometry with porous surfaces at scale rather than one at a timenot Formlabs PreForm
  • Automating a family of parts as a reusable design workflow that reruns when the load case changesnot Formlabs PreForm

Where each one falls short

Documented limitations, not opinions. Every one is a constraint you would hit in normal use.

Formlabs PreForm

  • PreForm only drives Formlabs printers, so the free software is really an entry cost to a closed hardware and resin ecosystem rather than a tool you can keep if you change machines.
  • Formlabs resin is sold in proprietary cartridges, and the ongoing consumable cost over a printer's life dwarfs anything a paid slicer would have charged.
  • Third-party resins can be used only through open material settings that step outside validated profiles, which affects print reliability and the comfort of warranty support.
  • Parameter-level control is deliberately limited compared with open slicers, so advanced users cannot tune exposure and layer behaviour the way they can on an open platform.
  • It is Windows and macOS only with no Linux build, which is awkward for research groups and labs standardised on Linux workstations.

nTop

  • nTop is a specialist tool that sits alongside mainstream CAD rather than replacing it, so you pay for an extra seat and accept a handoff between two geometry systems.
  • Implicit modelling requires a different way of thinking from feature-based CAD, and the retraining period is long enough that unused licences are a common and expensive outcome.
  • No pricing is published and there is no free or hobbyist tier, so evaluation runs through a sales process and small teams cannot try it seriously without engaging.
  • Subscription only, with no perpetual licence, means the geometry logic you built stops being editable the day you stop paying, which is a real risk for long-lifecycle aerospace and medical programmes.
  • The output is most valuable when you have additive manufacturing capacity to make it; organisations without machines that can print the geometry end up designing parts nobody can produce.

Pricing, plan by plan

Formlabs PreForm

Free
  • PreFormFree
    • Free download with no licence fee or subscription
    • No installation or seat limit
    • Works only with Formlabs printers

nTop

On request
  • nTop$undefined/year
    • Annual named or floating seat subscription
    • No perpetual licence offered
    • Capability tiers quoted by use case

Which should you pick?

Choose Formlabs PreForm if

  • You need automatic orientation.
  • You want to start without paying.
  • You work on Windows, macOS.
  • You also want support generation.
Formlabs PreForm review

Choose nTop if

  • You need implicit modelling.
  • You work on Windows, Cloud.
  • You also want lattice and cellular structures.
nTop review

Questions people ask

Is Formlabs PreForm or nTop better?
Neither clearly leads. Formlabs PreForm starts at Free and nTop at On request, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, Formlabs PreForm or nTop?
Formlabs PreForm has a free tier; the other does not. Paid plans start at Free for Formlabs PreForm and On request for nTop.
Does Formlabs PreForm or nTop run on more platforms?
Formlabs PreForm runs on Windows, macOS. nTop runs on Windows, Cloud.
Can I use Formlabs PreForm for free?
Yes. Formlabs PreForm has a free tier, so you can try it without paying. nTop starts at On request.
What is Formlabs PreForm best used for?
Formlabs PreForm is most often used for a dental laboratory preparing surgical guides on a validated resin and printer combination, a prototyping team running several form printers that needs job queueing and usage tracking, a jewellery workshop laying out castable patterns to maximise parts per build, an education lab that needs software with no per-student licence cost. Of those, a dental laboratory preparing surgical guides on a validated resin and printer combination and a prototyping team running several form printers that needs job queueing and usage tracking are not what nTop is typically brought in for.
What can Formlabs PreForm do that nTop cannot?
Formlabs PreForm covers Automatic orientation, Support generation, One-click print, Material presets. nTop covers Implicit modelling, Lattice and cellular structures, Field-driven design, Integrated simulation.

Answered from the vendors’ own pages

Formlabs PreForm: Is PreForm free?

Yes, with no licence fee, subscription or installation limit. It is free because it only prepares jobs for Formlabs printers.

nTop: Is nTop the same company as nTopology?

Yes. nTopology rebranded to nTop. The product is the same lineage.

Formlabs PreForm: Can PreForm drive a non-Formlabs printer?

No, and it never will. It is the front end for Formlabs hardware, which is where the revenue is.

nTop: Does it replace SolidWorks or NX?

No. It is used alongside them. Mainstream CAD handles the conventional geometry and assembly; nTop handles the lattice, field-driven and complex internal structure work.

Formlabs PreForm: Can I use third-party resin?

Only via open material settings, which take you outside validated profiles and the reliability those profiles are tuned for.

nTop: Is there a free version?

No free commercial tier is published. Access runs through a demo and sales process, with academic programmes handled separately.

Formlabs PreForm: Does it run on Linux?

No. Builds are provided for Windows and macOS only.

nTop: Can I buy a perpetual licence?

No. It is sold as an annual subscription, so budget it as recurring cost across the life of the programme.

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