WooCommerce is a free and open source e-commerce plugin for WordPress. It was developed to make it easier for WordPress users to sell products and services online.

WooCommerce includes a number of features that simplify the management of an online shop, including the ability to add and manage products, process payments and track orders. It also integrates with a number of popular WordPress plugins such as WordPress SEO and Gravity Forms, which can help users customise and expand the functionality of their online shop.

WooCommerce is a popular choice for small businesses and individuals looking to sell products online, as it is easy to use and has a large and active community of users and developers contributing to the platform. It is also highly customisable, allowing users to create a unique and professional-looking online shop to suit their specific needs.