Difference between GNU and Pro

Hi,
What is the difference between GNU and paid PRO version ?

Thanks,

Actually there are 3 versions:

  • GPL
  • Commercial
  • Enterprise ( PRO )

GPL and Commercial have the same functionality
Enterprise ( PRO ) allows to create multiple schedulers on the page ( which is not possible with GPL and Commercial versions )

What GPL means ? can I use it in my own software and do whatever I like with it ?

GPl - GNU General Public License
gnu.org/licenses/gpl.html

Basically allows to use software in any way, but any app which will be build on top of it, must be available under GPL license as well.

Rule of thumb: If this is a pet project - you can use GPL, If you plan to sell the software - you need to use Commercial license