DHTMLX JavaPlanner is now distributed under GNU GPL v.3. You can get a free Standard Edition of DHTMLX JavaPlanner v.1.5 for any GPL-ed project.
The Commercial license allows you to use JavaPlanner Standard Edition in only one project. It also includes one month of ticket support or 5 tickets within a year, and also an unlimited number of minor updates and one major update of the product.
The Enterprise license allows you to use JavaPlanner PRO Edition in an unlimited number of projects developed by one company. It comes with 12 months of technical support and allows free version upgrades, both minor and major ones. Besides, with JavaPlanner PRO you can create multiple schedulers per page.
Get JavaPlanner v.1.5. free now
Note: Please, take into account that no technical support is offered for the GPL-ed JavaPlanner.