Dear Pune,
As the main differences between CE and EE stand on the professional services and the admin functionalities,
we didn't foresee to distribute a trial version of Knowage EE but you can use Knowage CE (available from the OW2 Forge) for all your demo and test purposes before eventually moving to EE in order to get services and advanced features.
Here the main difference: www.knowage-suite.com/site/licensing/editions-comparison/
Best Regards
Angelo
