Is the SmartStoreNET ecommerce application is free?

Question

Hi, I am going to use smart store ecommerce community edition application for my business.They mentioned community edition is completely open source it seems to be the source code is completely free to use. But they are used some paid controls like telerik grid and tree view. Could you please anyone suggest me whether the smart store community edition source free or need to pay in any circumstances (like over a month or year).Please find the Githup url and their site. https://github.com/smartstore/SmartStoreNET https://smartstore.com/en/ Thanks in advance....