Flask
Top pick Open source
Free
Free forever
Overview
Flask is a lightweight Python web framework based on Werkzeug and Jinja. It provides the core components needed to build web applications and APIs while leaving many architectural decisions to the developer. Flask supports routing request handling templates sessions and extensions for additional functionality, making it suitable for small applications as well as larger projects built with a modular architecture.
Key features
- Lightweight Python web framework
- Flexible application architecture
- Built in development server
- Large extension ecosystem