Sad to see how DHTMLX have decided to change the license of the Scheduler. Yes, you can continue using a free GNU license, but without the Week Agenda View, Grid View, Timeline View, Units View, Multisection Events, it isn’t a valid option for many people.
More info:
We’re sorry that the change of licensing may upset some users, but we’ve made this decision in order to provide more flexibility to our dev team.
We’re developing the component intensively and over the past two year the efforts for maintaining has considerably grown. These changes should allow us to focus on further development and improve the quality of support.
Meanwhile, the older versions of the component are available on GitHub. If the new licensing does not suite you, you can still use the version 4.2.