ShopEngine is described as '— the all-in-all, feature-heavy WooCommerce builder with 13 modules, 60+ widgets, 16 templates & more features to empower your customization capabilities with WooCommerce pages'. There are more than 100 alternatives to ShopEngine for a variety of platforms, including Online / Web-based, Self-Hosted solutions, SaaS, Windows and Linux. The best alternative is Etsy. It's not free, so if you're looking for a free alternative, you could try WooCommerce or PrestaShop. Other great apps like ShopEngine are ISPmanager (Paid), Thirty Bees (Free, Open Source), OpenCart (Free, Open Source) and Wix.com (Freemium).
thirty bees is an open source e-commerce software that empowers merchants to focus less on their shop and more on their business. Having a fast, responsive, bug free e-commerce site is essential now, and thirty bees fills that void.
OpenCart is an open source PHP-based online shopping cart system. A robust e-commerce solution for Internet merchants with the ability to create their own online business and participate in e-commerce at a minimal cost.