Community Edition?

  
Is there a Community Edition?
Yes, it's version 8.0.0.16 and can be found in the downloads section (http://www.outsystems.com/NetworkDocuments/DownloadsEntry.aspx?VirtualDirectoryId=0). I suggest that you check out the Personal Edition if you want to learn and experiment, it is still free, but OutSystems hosts it.

J.Ja
Jeff-

As Justin suggests, the current (and easier) path is for you to head over to outsystems.com/get-started and claim your personal environment.  We host it and make it available for free!

Sean