Flask
Flask is a micro web framework written in Python. It is a minimalist framework that provides the basics for building a web application, and allows developers to build the rest of the application from scratch. This makes Flask highly flexible and suitable for small to medium-sized web applications, as well as for prototyping and building simple web APIs. Flask is based on the Model-View-Controller (MVC) architectural pattern, and provides a simple way to route URLs to functions that handle incoming requests. It also includes a lightweight templating engine for rendering HTML, and has support for storing and retrieving data from databases. Despite its simplicity, Flask is highly extensible and can be integrated with other libraries and frameworks to add additional functionality. This, combined with its small size and ease of use, makes Flask a popular choice for building web applications, especially for those who prefer a minimalist and unopinionated approach to web development.