There is no free version of Esko Studio. It requires a paid license, typically managed via a USB hardware key (dongle) or a software license through Esko’s Network License Manager (NLM).
However, note that none of these integrate directly into Adobe Illustrator’s workflow like Esko Studio does. esko studio download
So, you've downloaded Esko Studio and are ready to get started. Here are some tips and tricks to help you get the most out of the software: There is no free version of Esko Studio