The viewer can also open MS Project files (*.mpp, *.mpx, *.xml)....
We do not have a download file for the latest version (4.10), but you can try downloading it from the developer's site
Download version 3.1 from the developer's website
Version: 3.1
Date update: Jul 31, 2010
File name: RationalPlan-Viewer-3.17.1.dmg
Size: 78 MB

Latest versions of RationalPlan-Viewer

3.1
Jul 31, 2010
RationalPlan-Viewer-3.17.1.dmg

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