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CAD · head to head

KiCad vs Weka

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
Weka logo

Weka

Machine Learning

Collection of machine learning algorithms

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.; Weka the package management system needs an internet connection to download and install packages, so an air-gapped install gets only the core distribution
  • They diverge on capability: KiCad covers Schematic capture, Weka covers Classification.
  • Prices and features above were last checked on 31 August 2026.

Where they differ

Only the attributes on which KiCad and Weka actually diverge.

Attributes where KiCad and Weka differ
AttributeKiCadWeka
Pricing modelOpen source, no licence feeopen-source
PlatformsWindows, macOS, LinuxLinux, Mac, Windows
CategoryCADMachine Learning
FoundedUnknown1993

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 Weka

  • Classification
  • Regression
  • Clustering
  • Association rules
  • Feature selection
  • Java
  • R
  • Python

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 Weka
  • A university teaching PCB design where per-student licences are unaffordablenot Weka
  • An open hardware project that needs design files anyone can open and modifynot Weka
  • An engineer prototyping a board at home who needs commercial rights on the outputnot Weka

Weka

  • Teaching and exploring classic machine learning algorithms through a GUInot KiCad
  • Running data mining experiments and preprocessing without writing codenot 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.

Weka

  • The package management system needs an internet connection to download and install packages, so an air-gapped install gets only the core distribution
  • Weka is split into a stable 3.8 branch that receives only bug fixes and compatibility-safe upgrades and a 3.9 development branch that may receive features that break compatibility
  • Weka requires a 64-bit Java VM; the bundled installers ship Bellsoft OpenJDK 25 per platform and architecture

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

Weka

Free
  • Open SourceFree
    • All ML algorithms
    • GUI and CLI
    • Java API

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 Weka if

  • You need classification.
  • You want to start without paying.
  • You work on Linux, Mac, Windows.
  • You also want regression.
Weka review

Questions people ask

Is KiCad or Weka better?
Neither clearly leads. KiCad starts at Free and Weka at Free, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, KiCad or Weka?
KiCad starts at Free and Weka at Free.
Does KiCad or Weka run on more platforms?
KiCad runs on Windows, macOS, Linux. Weka runs on Linux, Mac, Windows.
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 Weka is typically brought in for.
What can KiCad do that Weka cannot?
KiCad covers Schematic capture, PCB layout, No design limits, 3D viewer. Weka covers Classification, Regression, Clustering, Association rules.

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.

Weka: What is the cost of Weka software?

Weka is provided at no cost as open-source software released under the GNU General Public License, making it freely available for download and use.

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.

Weka: Are there commercial licensing options available?

Yes, the project offers information about commercial licenses for organizations requiring non-GPL terms, which can be found in their commercial applications documentation.

Source
KiCad: How is development funded?

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

Weka: What support resources are available to users?

Multiple support avenues exist including comprehensive documentation, frequently asked questions, dedicated help resources, and access to courses for learning the platform.

Source
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.

Weka: Is source code access provided?

Yes, developers have full access to source code through the Git repository, along with development documentation and code credits for contributors.

Source
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