WooCommerce is an open-source ecommerce platform used to build and manage online stores. It is designed for merchants and developers who need a customizable, self-hosted solution for selling products and services.

Core Platform: The software provides the essential functions for running an online store, including product listings, a shopping cart, and a checkout process. You install it on your own web hosting, giving you complete ownership of your store's data and operations.

Extensions and Customization: A large marketplace of official and third-party extensions allows you to add specific features like advanced shipping calculators, tax services, and marketing tools. The open-source code also enables developers to build completely custom functionality.

Payment and Hosting Freedom: You can integrate with numerous payment gateways and processors, avoiding being locked into a single provider. Similarly, you can choose any web host that meets the technical requirements, controlling your hosting costs and performance.

Sales Channels: It supports selling through multiple channels beyond a standard website. Extensions enable syncing inventory and orders with physical point-of-sale systems, major online marketplaces, and social media platforms.

Community and Support: As a widely adopted platform, it is backed by extensive documentation, community forums, and professional development agencies. This ecosystem helps store owners find solutions and developers build stores for clients.