Elfsight has an incredible library of over 60 widgets that work seamlessly across any platform (Shopify, WooCommerce, Webflow etc). From age verification widgets to review widgets and social feed display widgets - You can do a lot with Elfsight without the need for a developer.
Shopify is a commerce platform that allows anyone to set up an online store and sell their products. It's the go-to eCommerce platform for young direct-to-consumer brands. It's ease of use and setup is what's most attractive to merchants, but also the incredibly vast Shopify app store.
Klaviyo is the best in class email marketing solution for eCommerce. It's powerful because it connects to your store, and you can create awesome customer segments based on past purchasing behaviors, customer preferences, and even future predictions of spending.