Defference between Open Source - GPL Gantt and others


I would like to know what are the functionality vise difference between the Open source GPL licensed ganttChart and other paid ones(Commercial and enterprise).


Currently there is no difference in functionality.
The Commercial and Enterprise licenses include the support subscription though.


I’m trying to download dhtmlxGantt but it’s coming down as v1.3 not v2.0. I’d like to make sure I get the latest version so I can follow along in the documentation.


I was able to find it but not all the downloads links on the site are the same just FYI