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FreeCAD vs O3DE

FreeCAD logo

FreeCAD

CAD

Open-source parametric 3D CAD modeler

From
Free
Rated
-
Full reviewWebsite
O3DE logo

O3DE

Game Development

Open 3D Engine - Professional game engine

From
Free
Rated
-
Full reviewWebsite

The short version

  • Each has a real cost: FreeCAD no pricing published; product is completely free and open-source; O3DE minimum hardware is a quad-core 2.5 GHz x86 CPU with SSE 4.1, 16 GB RAM and a DirectX 12 or Vulkan GPU with 2 GB VRAM and Shader Model 6.2
  • They diverge on capability: FreeCAD covers Parametric modeling, O3DE covers 3D graphics rendering.
  • Prices and features above were last checked on 30 August 2026.

Where they differ

Only the attributes on which FreeCAD and O3DE actually diverge.

Attributes where FreeCAD and O3DE differ
AttributeFreeCADO3DE
Pricing modelopen-sourcefree
PlatformsWindows, macOS, LinuxWindows, Macos, Linux, Ios, Android, Playstation, Xbox
CategoryCADGame Development
Founded20022021

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 FreeCAD

  • Parametric modeling
  • Part design
  • Assembly
  • Drafting
  • FEM simulation
  • Path/CAM
  • Architecture
  • BIM

Only in O3DE

  • 3D graphics rendering
  • Modular architecture
  • Physics engine
  • Audio system
  • Animation tools
  • Particle effects
  • Material system
  • Lighting system

Both cover

  • Windows support
  • Linux support

What people use each for

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

FreeCAD

  • Mechanical engineering designnot O3DE
  • Architectural modellingnot O3DE
  • Product design and prototypingnot O3DE
  • CAM/CNC path generationnot O3DE

O3DE

  • Building 3D games and simulations on an open source Apache-licensed enginenot FreeCAD
  • Robotics and industrial simulation using O3DE Gemsnot FreeCAD
  • Projects that need full engine source access with no royaltynot FreeCAD

Where each one falls short

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

FreeCAD

  • No pricing published; product is completely free and open-source
  • Donations are optional and voluntary for project support

O3DE

  • Minimum hardware is a quad-core 2.5 GHz x86 CPU with SSE 4.1, 16 GB RAM and a DirectX 12 or Vulkan GPU with 2 GB VRAM and Shader Model 6.2
  • Raytracing features require Shader Model 6.3
  • Disk space required is 40 GB using the prebuilt installer and 100 GB or more when building from source
  • Building the engine from source needs 2 GB of RAM per build thread on top of normal system requirements
  • On Windows the editor requires Windows 10 version 20H2 or later plus Visual Studio 2019 16.11.x, 2022 17.3.x or 2026 18.0.x with the Game development with C++ workload
  • The only primary Linux distribution for the editor is Ubuntu 22.04 LTS, and Ubuntu on 64-bit ARMv8 is experimental
  • Linux builds need CMake 3.30.0 or later, which is newer than the 3.22 shipped by default with Ubuntu 22.04
  • Wayland support is experimental, requires building from source, and is limited to the Game Launcher with no editor support until O3DE moves to Qt6
  • Linux requires a long list of additional apt library packages to be installed before building

Pricing, plan by plan

FreeCAD

Free

No published plan breakdown. See the FreeCAD review.

O3DE

Free
  • FreeFree
    • Full engine
    • Modular architecture
    • Cross-platform

Which should you pick?

Choose FreeCAD if

  • You need parametric modeling.
  • You want to start without paying.
  • You work on Windows, macOS, Linux.
  • You also want part design.
FreeCAD review

Choose O3DE if

  • You need 3d graphics rendering.
  • You want to start without paying.
  • You work on Windows, Macos, Linux, Ios, Android, Playstation, Xbox.
  • You also want modular architecture.
O3DE review

Questions people ask

Is FreeCAD or O3DE better?
Neither clearly leads. FreeCAD starts at Free and O3DE at Free, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, FreeCAD or O3DE?
FreeCAD starts at Free and O3DE at Free.
Does FreeCAD or O3DE run on more platforms?
FreeCAD runs on Windows, macOS, Linux. O3DE runs on Windows, Macos, Linux, Ios, Android, Playstation, Xbox.
Can I use FreeCAD for free?
Both have a free tier, so you can try either at no cost before committing.
What is FreeCAD best used for?
FreeCAD is most often used for mechanical engineering design, architectural modelling, product design and prototyping, cam/cnc path generation. Of those, mechanical engineering design and architectural modelling are not what O3DE is typically brought in for.
What can FreeCAD do that O3DE cannot?
FreeCAD covers Parametric modeling, Part design, Assembly, Drafting. O3DE covers 3D graphics rendering, Modular architecture, Physics engine, Audio system. Both handle Windows support, Linux support.

Answered from the vendors’ own pages

FreeCAD: How much does FreeCAD cost?

FreeCAD is completely free with no licensing fees, vendor lock-in, sign-up requirements, paywalls, or restrictions. The software is open-source and available for anyone to use and adapt.

Source
O3DE: Is O3DE free to download and use?

Yes, O3DE is completely free and open source, available for download at no cost under continuous development.

Source
FreeCAD: Does FreeCAD offer optional support or sponsorship?

FreeCAD accepts voluntary donations to support the project. Sponsorship tiers range from $1 per month (Normal Sponsor) to $200 per month (Gold Sponsor), with different visibility levels. One-time donations of any amount are also accepted.

Source
O3DE: How is O3DE funded if it is free?

O3DE is supported through optional donations and member organization contributions rather than user licensing fees.

Source
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