kitio.aiAdded Nov 5, 2026
Weka
FreeOpen-source Java workbench for machine learning and data mining
What is Weka?
Weka is a free, open-source machine learning workbench written in Java and developed at the University of Waikato in New Zealand. Students, teachers and researchers use it to try classification, clustering and other data mining methods through a graphical interface or code.
The workbench bundles a large set of learning algorithms with tools for preparing data, visualizing it and comparing models, so you can run experiments without writing much code. It is released under the GNU General Public License, and developers can also call it as a Java library.
The project site offers downloads, documentation, sample datasets, a companion book and online courses on data mining with Weka. Commercial licenses are available for companies that cannot use GPL software, and the source code lives in a public Git repository.
Features
- Classification and regression
- Clustering
- Data preprocessing
- Visualization
- Experiment comparison
- Java API
Tags
Releases
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Organization
University of Waikato
🇳🇿 New Zealand
Listed by kitio.ai · unverified owner
Pricing
- Pricing model
- Free
- Paid options from
- 100% free
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Pros and cons
Pros
- Free and open source
- Graphical interface for beginners
- Courses and a book to learn from
Cons
- Dated desktop interface
- Struggles with very large datasets
- Little support for deep learning
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Q&A
What is Weka?
Weka is a free, open-source machine learning workbench written in Java and developed at the University of Waikato in New Zealand. Students, teachers and researchers use it to try classification, clustering and other data mining methods through a graphical interface or code.
Can Weka be used in commercial software?
Weka is GPL-licensed, and the University of Waikato offers separate commercial licenses for cases where the GPL does not fit.
Do I need to know programming to use Weka?
No. Its graphical workbench lets you load data and run algorithms by clicking, while programmers can use it as a Java library.
How much does Weka cost?
Weka is 100% free.
Is there a free version of Weka?
Yes. Weka is completely free to use.
What are the main features of Weka?
Classification and regression, Clustering, Data preprocessing, Visualization, Experiment comparison, Java API.
Who makes Weka?
Weka is made by University of Waikato.
What are the best alternatives to Weka?
Popular alternatives include Apache Spark MLlib, KNIME, PostHog.