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RationalPlan Project Viewer is a free project management software viewer, the perfect solution for anyone (from project stakeholders to team workers) to view your projects in detail. Although the project managers plan and control the projects from start to end and make all the necessary changes, there are some other people, the stakeholders that need to check and overview the projects evolution into their smallest detail.

RationalPlan Project Viewer is freely distributed as a viewer for our products. Besides it gives you the possibility to import MSProject files and to view them also for free. That makes RationalPlan more...

What's New

Version 4.8.5:
  • Added possibility for Earned Value Analysis -- including CV, SV, CPI, SPI, ACWP, BCWP, BCWS related values
  • Better integration with Ubuntu
  • The products are now also available in Hungarian
  • Tomcat 8 compatibility for the On Premise solution
  • Added tasks distribution in Timesheet view
  • More work on filters
  • Also export data to Microsoft more...


  • OS X 10.5 or later
  • Java Runtime Environment 1.6 or later

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RationalPlan Project Viewer User Discussion

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Sanchai Member IconReview+116

The new version 4.5.1 don't open in Mountain Lion 10.8.4. When I start RationalPln Viewver 4.5.1, it stated that the software is damaged and should be move to Trash or to cancel the startup of the software. I have tried to right click and open 4.5.1 but it won't run.

Have to revert back to version 4.4.2 which run fine. Fix please!!!

Reply1 reply
Version 4.5.1
Stand By Soft (Developer)

The version of the product does not have any problem. The "software is damaged" error appears because of Apple starting with the addition of the Gatekeeper in Mac OS X Mountain Lion. Any application that was not downloaded from Apple App Store will present this problem at install time. For details please visit:

Lardlad Member IconComment+1

Another good reason to not use Windows at work. This program imported the MS Project Plan file perfectly (.mpp). I would usually have to launch Windows just to read these files, then I'd have to use a Project Plan license. The view isn't as flexible as I would like, it is a bit slow (Java) but it works. Just for the fact that it does import mpp files it is perfect for me and if all you need is to view a MS PP file, I recommend this program.

Reply1 reply
Version 3.9.1

For any suggestion please write us to support@rationalplan.com
You may also check out he latest version (3.10.2)

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Current Version (4.x)


Downloads 10,854
Version Downloads 153
License Free
Date 24 May 2014
Platform Intel 64 / OS X / Intel 32
Price Free
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