Toki

WooCommerce is a free WordPress plugin that adds e-commerce functionality to your WordPress website so you can have an online store. With just a few clicks, your WordPress website turns into a fully-functional e-commerce website.

BigCommerce is an eCommerce solution that runs on its own servers — so you don’t have to buy web hosting or install anything on your computer to use it. With tons of built-in features, data tools, and more, BigCommerce is best for large or fast-growing businesses.

Listrak is the omni channel marketing automation platform of choice for businesses with eCommerce and retail presence. Leverage it to manage email marketing, mobile messaging, customer insights and cross-channel orchestration.

Omnisend

Omnisend is an omnichannel marketing automation platform for ecommerce businesses. Omnisend allows you to add several channels to the same automation workflow for seamless communication via email, SMS, web push notifications, and more.

Tapcart has been called the "Shopify for mobile apps" and it's drag-and-drop platform let brands customize their mobile app including layout, product detail pages, integrate checkout options, include product reviews, and even add other branded content (i.e., blogs, lookbooks, videos, live video, and more). Tapcart also lets merchants sync directly from Shopify in realtime so inventory, products, and collection are all up-to-date.