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Python Libraries for Web Development: APIs, UIs, ORMs & Servers

Libraries for building web and data apps in Python: frameworks, UI builders, validation, databases, task queues and servers.

24 topics•4 categories•Updated October 2026

Web & API Frameworks

5 entries

Core frameworks (see the Python Frameworks page for more).

01FastAPITyped async API framework; GitHub repository. 02DjangoFull-stack web framework; GitHub repository. 03FlaskLightweight web framework; GitHub repository. 04Django REST FrameworkAPI toolkit for Django; GitHub repository. 05LitestarASGI framework for APIs.

Data Apps & Pure-Python UIs

7 entries

Build interfaces without writing JavaScript.

06StreamlitTurn data scripts into shareable web apps. 07GradioBuild demos and web UIs for machine learning models. 08Plotly DashAnalytical web apps in Python; documentation at dash.plotly.com. 09TaipyBuild data and AI web apps; last GitHub update August 2026. 10ReflexFull-stack web apps in pure Python; very active in October 2026. 11NiceGUIPython UI framework that runs in the browser. 12TextualRapid application framework for terminal and web UIs.

Validation, Databases, Tasks & Servers

6 entries

The supporting libraries most web apps need.

13PydanticData validation using Python type hints; the docs now live at pydantic.dev. 14SQLAlchemySQL toolkit and object-relational mapper. 15StarletteASGI toolkit used by FastAPI. 16UvicornASGI server. 17CeleryDistributed task queue. 18aiohttpAsync HTTP client and server.

Related Pages

6 entries

Neighbouring pages on this site.

19PythonPython hub. 20Python FrameworksPython web and application frameworks. 21Python Libraries for Web DevelopmentLibraries around web apps. 22Microservices Frameworks for PythonPython microservices frameworks. 23API Management Platforms and GatewaysAPI management platforms. 24Software FrameworksFrameworks by language.

Frequently Asked Questions

Which Python library should I use for a web API?

FastAPI is a common choice for typed async APIs, Django REST framework suits Django projects, and Flask is a simple option for small services.

How can I build a web UI without JavaScript?

Streamlit, Gradio, Dash, Reflex, NiceGUI and Taipy let you build interfaces in Python alone; Streamlit and Gradio are popular for data and machine learning demos.

What else does a web app need?

Validation (Pydantic), database access (SQLAlchemy or the Django ORM), background tasks (Celery) and an ASGI or WSGI server such as Uvicorn.

What happened to the earlier page?

This page replaces "Python Libraries for Web Development.html", whose file name contained spaces.

How current is this page?

Links were checked in October 2026. Sites that block automated checks are kept and may need a manual click. Last-commit dates are from GitHub in October 2026 and show activity only; check each project's release notes before adopting it.