Square should not need any introduction to small business owners. It enables sellers to accept credit cards anywhere. Thanks to these plugins, you are going to have an easier time integrating Square with WooCommerce:
WooCommerce Square: syncs WooCommerce to Square and vice versa. It supports simple and variable products. Lets you sync products, categories, images, and inventory. You will need SSL enabled to use this plugin.
Square Up Payment Gateway: allows you to accept Square payments at WooCommerce checkout. It also lets you manage refunds more easily.
Square for WooCommerce: thanks to this plugin, you can start accessing online and in-person payments, track your inventory and sales, and take advantage of Chargeback protection and fraud detection for your business.
WooSquare Pro: yet another commercial plugin that lets you sync products and categories between Square and WooCommerce. It supports simple and variable products. Lets you manage refunds. Sandbox API is supported.
Have you found better Square plugins for WooCommerce? Please share them here.