Web application frameworks

If you're looking for a lightweight backend framework, the best options are usually frameworks that keep the core small, start quickly, and let you add features such as database access, authentication, and validation as needed.

Here are some strong choices for building web applications, REST APIs, microservices, and serverless backends.

7 lightweight backend frameworks worth considering

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1. FastAPI

(Python) (API-first)

An excellent choice for modern APIs. It offers asynchronous request handling, type-hint-based validation, and automatic interactive API documentation.

Best for: REST APIs, AI/ML services, and typed Python backends.

Docs:FastAPI documentation

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