Pinia is a store library and state management framework for Vue.js, designed primarily for building front-end web applications. It uses declarative syntax and offers its own state management API. Pinia was created as an exploration of what Vuex could look like in the future, with a simpler API and better support for type inference with TypeScript. Unlike Vuex, Pinia is modular by design and does not include mutations, which enables developers to create numerous stores and import them into components as needed. Pinia provides a centralised store with a built-in mechanism for saving, updating, and retrieving application state. Pinia integrates with Vue Devtools, a popular extension for debugging Vue.js applications, and includes support for multiple plugins, including Nuxt and Devtools. Pinia is extremely light and intuitive, and its API is designed to let you write well-organized stores.