I am using 2 e-commerce solution, one under prestaShop, and one under oscommerce.
It's complicated to migrate an old Prestashop o the new 1.7 (lot of bug)
in other parts, I also use OsCommerce, the problem there is no development on the core, the differents version are confused and doesn't work well php 7. Some payment, shipping modules and core become obsolete.
That's why I am looking for a new solution allowing me to transfer my product around 1 solution.
ClicShopping could be an opportunity but I am testing other open source carts before to take my decision.
I am not a coder, I look something friendly and I can customize easily.