Download the software via periodic releases or from version control.

You may optionally register at the Registration page.

Latest Official Release
The current release is version 3.20 from July 2010. The following downloads are available:

Release 3.20 (July 12 2010)

• ITK Software Guide 2.4.0 PDF (hosted at SourceForge)
• InsightToolkit-3.20.0.tar.gz (hosted at SourceForge)
• InsightToolkit-3.20.0.zip (hosted at SourceForge)
• InsightApplications-3.20.0.tar.gz (hosted at SourceForge)
• InsightApplications-3.20.0.zip (hosted at SourceForge)
• DoxygenInsightToolkit-3.20.0.tar.gz (hosted at SourceForge)
• DoxygenInsightToolkit-3.20.0.zip (hosted at SourceForge)
• CableSwig-ITK-3.20.0.tar.gz (hosted at SourceForge)
• CableSwig-ITK-3.20.0.zip (hosted at SourceForge)

Legacy Releases
Click here for access to legacy release files

Current Development
Download ITK source via Git: http://www.itk.org/Wiki/ITK/Git

One may also browse the Git Repository Online http://itk.org/gitweb

This software may not be exported in violation of any U.S. export laws or regulations.  For more information regarding Export Control matters please go to http://kitware.com/export_control/index.html.