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Game Development · head to head

Bevy vs SolveSpace

Bevy logo

Bevy

Game Development

A refreshingly simple data-driven game engine built in Rust

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: Bevy rust only, so it assumes a language most game teams do not already use; 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: Bevy covers Entity Component System, SolveSpace covers Constraint solver.
  • Prices and features above were last checked on 1 September 2026.

Where they differ

Only the attributes on which Bevy and SolveSpace actually diverge.

Attributes where Bevy and SolveSpace differ
AttributeBevySolveSpace
Pricing modelfreeOpen source, no licence fee
PlatformsWindows, Macos, Linux, WebglWindows, macOS, Linux
CategoryGame DevelopmentCAD
Founded2020Unknown

Identical on both: starting price (Free), free tier (Yes), 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 Bevy

  • Entity Component System
  • 2D/3D rendering
  • Audio system
  • Asset pipeline
  • Hot reloading
  • Modular architecture
  • Parallel systems
  • Rust ecosystem

Only in SolveSpace

  • Constraint solver
  • Solid modelling
  • Assemblies
  • Export formats
  • Small footprint

Both cover

  • Cross-platform

What people use each for

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

Bevy

  • 2D and 3D game development in Rustnot SolveSpace
  • Data-driven design using an entity component systemnot SolveSpace
  • Shipping to Windows, macOS, Linux, web, iOS and Android from one codebasenot SolveSpace
  • Projects wanting a permissive licence with no royalties or feesnot SolveSpace

SolveSpace

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

Where each one falls short

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

Bevy

  • Rust only, so it assumes a language most game teams do not already use
  • No visual editor of the kind Unity or Godot provide, so scenes and logic are written in code
  • Built around ECS, which is a different mental model from the scene-graph engines most developers come from

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

Bevy

Free
  • Open SourceFree
    • Full engine access
    • ECS architecture
    • Hot reloading

SolveSpace

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

Which should you pick?

Choose Bevy if

  • You need entity component system.
  • You want to start without paying.
  • You work on Windows, Macos, Linux, Webgl.
  • You also want 2d/3d rendering.
Bevy 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 Bevy or SolveSpace better?
Neither clearly leads. Bevy 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, Bevy or SolveSpace?
Bevy starts at Free and SolveSpace at Free.
Does Bevy or SolveSpace run on more platforms?
Bevy runs on Windows, Macos, Linux, Webgl. SolveSpace runs on Windows, macOS, Linux.
Can I use Bevy for free?
Both have a free tier, so you can try either at no cost before committing.
What is Bevy best used for?
Bevy is most often used for 2d and 3d game development in rust, data-driven design using an entity component system, shipping to windows, macos, linux, web, ios and android from one codebase, projects wanting a permissive licence with no royalties or fees. Of those, 2d and 3d game development in rust and data-driven design using an entity component system are not what SolveSpace is typically brought in for.
What can Bevy do that SolveSpace cannot?
Bevy covers Entity Component System, 2D/3D rendering, Audio system, Asset pipeline. SolveSpace covers Constraint solver, Solid modelling, Assemblies, Export formats. Both handle Cross-platform.

Answered from the vendors’ own pages

Bevy: How much does Bevy Engine cost?

Bevy is 100% free, forever. There are no licensing fees, contracts, or sales cuts, whether for development, deployment, or 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.

Bevy: Is Bevy Engine open source?

Yes. Bevy is open source under the permissive MIT or Apache 2.0 licenses, meaning you can use, modify, and distribute it freely.

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.

Bevy: Are there any hidden costs with Bevy Engine?

No. Bevy has no license fees, contracts, or hidden charges. It is community-driven and funded through voluntary donations rather than commercial licensing.

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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