Squarespace vs Weebly

Whether you need simple pages, striking galleries, a professional blog, or an online store, it's all included with your Squarespace website. Unlike alternatives in Squarespace everything is mobile-ready right from the start. Creating your website with Squarespace is a simple, intuitive process. Just add and arrange your content and features anywhere you want with the click of a mouse.
Building a website on Weebly is unlike any other alternative website builder. Our drag & drop website builder makes it dead simple to create a powerful, professional website without any technical skills required. Over 6 million people and small businesses have joined Weebly to build their online presence. Content elements (like text, photos, maps, and videos) are added to your website by simply dragging & dropping them into place. Text is edited just like in a word processor. Building your website is done in real time, right from within your web browser.
Weebly has better video than Squarespace

2017 - Weebly adds Square integration to take on Squarespace

Square is a great tool for independent businesses, but it used to be difficult to maintain an offline inventory with your Weebly storefront. New Weebly + Square integration allows to process credit cards online or in person and provides more tools to combine your online business with offline sales. Now you can import your products and sync your online and offline inventory and keep them automatically up-to-date, making it easy to share and track products between systems. Payment processing with Square is now available all paid plans, along with Square product import and inventory sync and special offers including a free credit card reader giveaway and lower transaction rates. So we may assume that Weebly becomes better integrated with Square in comparison to Squarespace