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Game Development · head to head

Panda3D vs SolveSpace

Panda3D logo

Panda3D

Game Development

Free, open-source 3D engine for game development

From
Free
Rated
-
Full reviewWebsite
S

SolveSpace

CAD

Open source parametric CAD with a constraint solver in a few megabytes

From
Free
Rated
-
Full reviewWebsite

The short version

  • Each has a real cost: Panda3D completely free to use including for commercial projects, with source code available under the permissive BSD license, no paid tier; SolveSpace the in-house geometry kernel fails on complex boolean operations and fillets, and the failure is sometimes silent bad geometry rather than an error message, so models must be checked before export or manufacture.
  • They diverge on capability: Panda3D covers 3D graphics rendering, SolveSpace covers Constraint solver.
  • Prices and features above were last checked on 1 September 2026.

Where they differ

Only the attributes on which Panda3D and SolveSpace actually diverge.

Attributes where Panda3D and SolveSpace differ
AttributePanda3DSolveSpace
Pricing modelfreeOpen source, no licence fee
CategoryGame DevelopmentCAD
Founded1999Unknown

Identical on both: starting price (Free), free tier (Yes), platforms (Windows, Macos, Linux), 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 Panda3D

  • 3D graphics rendering
  • Physics engine (Bullet)
  • Audio system
  • Input handling
  • Skeletal animation
  • Particle effects
  • Shading
  • Scene management

Only in SolveSpace

  • Constraint solver
  • Solid modelling
  • Assemblies
  • Export formats
  • Cross-platform
  • Small footprint

What people use each for

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

Panda3D

  • 3D game developmentnot SolveSpace
  • 3D applicationsnot SolveSpace
  • Game prototypingnot SolveSpace
  • Visualizationnot SolveSpace

SolveSpace

  • Designing 3D printed parts on a machine that cannot run mainstream CADnot Panda3D
  • Teaching constraint-based parametric modelling without buying licences for a classroomnot Panda3D
  • Checking that a mechanical linkage moves as intended before cutting metalnot Panda3D
  • Producing dimensionally accurate STEP or STL output from a small open source toolchainnot Panda3D

Where each one falls short

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

Panda3D

  • Completely free to use including for commercial projects, with source code available under the permissive BSD license, no paid tier

SolveSpace

  • The in-house geometry kernel fails on complex boolean operations and fillets, and the failure is sometimes silent bad geometry rather than an error message, so models must be checked before export or manufacture.
  • There is no proper drawing and dimensioning workflow, so manufacturing documentation has to be produced in another application.
  • Development is volunteer-led and intermittent; long gaps between releases are normal and there is no support contract available at any price.
  • Assembly-level import of external CAD is very limited, so it does not fit a supply chain that exchanges native or assembly-level models with suppliers.
  • The interface follows its own conventions rather than mainstream CAD ones, so existing SolidWorks or Fusion users spend time unlearning habits for a tool with a lower ceiling.

Pricing, plan by plan

Panda3D

Free
  • FreeFree
    • Full engine
    • Python and C++
    • 3D graphics

SolveSpace

Free
  • SolveSpaceFree
    • Full application under the GPL
    • No seat limit
    • Windows, macOS and Linux builds

Which should you pick?

Choose Panda3D if

  • You need 3d graphics rendering.
  • You want to start without paying.
  • You work on Windows, Macos, Linux.
  • You also want physics engine (bullet).
Panda3D review

Choose SolveSpace if

  • You need constraint solver.
  • You want to start without paying.
  • You work on Windows, macOS, Linux.
  • You also want solid modelling.
SolveSpace review

Questions people ask

Is Panda3D or SolveSpace better?
Neither clearly leads. Panda3D starts at Free and SolveSpace at Free, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, Panda3D or SolveSpace?
Panda3D starts at Free and SolveSpace at Free.
Does Panda3D or SolveSpace run on more platforms?
Panda3D runs on Windows, Macos, Linux. SolveSpace runs on Windows, macOS, Linux.
Can I use Panda3D for free?
Both have a free tier, so you can try either at no cost before committing.
What is Panda3D best used for?
Panda3D is most often used for 3d game development, 3d applications, game prototyping, visualization. Of those, 3d game development and 3d applications are not what SolveSpace is typically brought in for.
What can Panda3D do that SolveSpace cannot?
Panda3D covers 3D graphics rendering, Physics engine (Bullet), Audio system, Input handling. SolveSpace covers Constraint solver, Solid modelling, Assemblies, Export formats.

Answered from the vendors’ own pages

Panda3D: Is Panda3D free to use?

Yes, Panda3D is completely free to use with no royalties, license payments, registration, or costs of any kind, even for commercial use.

Source
SolveSpace: Is it really free for commercial work?

Yes. It is released under the GPL with no licence fee and no seat limit. Support is community only.

Panda3D: What license does Panda3D use?

Panda3D is distributed under a permissive BSD license, allowing users to study and modify the source code.

Source
SolveSpace: Can it replace Fusion 360 or SolidWorks?

No. It handles parts and simple assemblies well. Complex geometry, drawings and supply chain interoperability are outside its range.

Panda3D: Are there any costs for deploying Panda3D applications?

No, the SDK includes deployment tools at no additional charge and has no external paid dependencies required for deployment.

Source
SolveSpace: What hardware does it need?

Very little. It runs on old laptops and small Linux machines where mainstream CAD will not start.

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