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Last Commit
Apr. 23, 2019
Oct. 15, 2012


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OpenRefine is a Java-based power tool that allows you to load data, understand it, clean it up, reconcile it, and augment it with data coming from the web. All from a web browser and the comfort and privacy of your own computer.


Run from source

If you have cloned this repository to your computer, you can run OpenRefine with:

  • ./refine on Mac OS and Linux
  • refine.bat on Windows

This requires JDK 8 and Apache Maven.

Documentation and Videos

Contributing to the project

Contact us

Licensing and legal issues

OpenRefine is open source software and is licensed under the BSD license located in the LICENSE.txt. See the folder licenses for information on open source libraries that OpenRefine depends on.


This software was created by Metaweb Technologies, Inc. and originally written and conceived by David Huynh Metaweb Technologies, Inc. was acquired by Google, Inc. in July 2010 and the product was renamed Google Refine. In October 2012, it was renamed OpenRefine as it transitioned to a community-supported product.

See for the list of OpenRefine contributors.

Latest Releases
OpenRefine V3.2 Beta
 Mar. 1 2019
OpenRefine V3.1 Final Release
 Nov. 28 2018
OpenRefine V3.1 Beta Release
 Nov. 7 2018
OpenRefine V3.0 Release
 Sep. 16 2018
OpenRefine V3.0 RC1 Release
 Jul. 16 2018