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CAD · head to head

KiCad vs O3DE

KiCad logo

KiCad

CAD

Free open source schematic capture and PCB layout with no seat, board size or layer limits

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: KiCad there is no vendor obligation behind the free software, so a blocking bug is escalated to a volunteer community unless you separately buy a contract from KiCad Services Corporation.; 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: KiCad covers Schematic capture, O3DE covers 3D graphics rendering.
  • Prices and features above were last checked on 31 August 2026.

Where they differ

Only the attributes on which KiCad and O3DE actually diverge.

Attributes where KiCad and O3DE differ
AttributeKiCadO3DE
Pricing modelOpen source, no licence feefree
PlatformsWindows, macOS, LinuxWindows, Macos, Linux, Ios, Android, Playstation, Xbox
CategoryCADGame Development
FoundedUnknown2021

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 KiCad

  • Schematic capture
  • PCB layout
  • No design limits
  • 3D viewer
  • Manufacturing output
  • Scripting

Only in O3DE

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

What people use each for

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

KiCad

  • A hardware startup designing a multi-layer board without paying for an Altium seatnot O3DE
  • A university teaching PCB design where per-student licences are unaffordablenot O3DE
  • An open hardware project that needs design files anyone can open and modifynot O3DE
  • An engineer prototyping a board at home who needs commercial rights on the outputnot O3DE

O3DE

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

Where each one falls short

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

KiCad

  • There is no vendor obligation behind the free software, so a blocking bug is escalated to a volunteer community unless you separately buy a contract from KiCad Services Corporation.
  • High speed design support, including advanced constraint management, differential pair and impedance tooling, remains behind Altium and Cadence, which matters as soon as boards carry fast interfaces.
  • Rigid-flex and complex stack-up design is weak, so products with flex circuits usually need a commercial package.
  • Component library and part sourcing integrations are thinner than the commercial tools, so parts data and availability checking is manual work someone has to own.
  • Multi-engineer design data management is not provided; teams end up assembling Git workflows themselves, and merge handling on binary-adjacent design files is awkward.

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

KiCad

Free
  • KiCadFree
    • Full suite under GPL
    • No board size, layer or component limits
    • Commercial use permitted
  • Commercial support$undefined/year
    • Support contracts sold separately by KiCad Services Corporation
    • Priority issue handling and consulting
    • Not included with the free software

O3DE

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

Which should you pick?

Choose KiCad if

  • You need schematic capture.
  • You want to start without paying.
  • You work on Windows, macOS, Linux.
  • You also want pcb layout.
KiCad 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 KiCad or O3DE better?
Neither clearly leads. KiCad 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, KiCad or O3DE?
KiCad starts at Free and O3DE at Free.
Does KiCad or O3DE run on more platforms?
KiCad runs on Windows, macOS, Linux. O3DE runs on Windows, Macos, Linux, Ios, Android, Playstation, Xbox.
Can I use KiCad for free?
Both have a free tier, so you can try either at no cost before committing.
What is KiCad best used for?
KiCad is most often used for a hardware startup designing a multi-layer board without paying for an altium seat, a university teaching pcb design where per-student licences are unaffordable, an open hardware project that needs design files anyone can open and modify, an engineer prototyping a board at home who needs commercial rights on the output. Of those, a hardware startup designing a multi-layer board without paying for an altium seat and a university teaching pcb design where per-student licences are unaffordable are not what O3DE is typically brought in for.
What can KiCad do that O3DE cannot?
KiCad covers Schematic capture, PCB layout, No design limits, 3D viewer. O3DE covers 3D graphics rendering, Modular architecture, Physics engine, Audio system.

Answered from the vendors’ own pages

KiCad: Is KiCad really free for commercial work?

Yes. It is GPL licensed with no restriction on commercial use, board size, layer count or component count.

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
KiCad: Can I buy support?

Yes, but not from the project. KiCad Services Corporation sells commercial support contracts separately; CERN moved to exactly that arrangement after ending its donation programme.

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
KiCad: How is development funded?

Through donations and sponsors administered via The Linux Foundation, plus contributed engineering time.

KiCad: Is it good enough to replace Altium?

For most low and medium speed boards yes. For high speed, rigid-flex and heavily constrained designs, the commercial tools still hold a clear lead.

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