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pallets flask

The Python micro framework for building web applications.

Stars

72,163

Popular Active

Forks

16,958

Watchers: 72,163

Language

Python

License: BSD 3-Clause "New" or "Revised" License

Repository Radar Score

61 / 100

Growth

7d
+0
30d
+0
%
0.0%

Not enough metric snapshots yet to chart growth for this repository.

Score breakdown

  • popularity 91
  • growth 0
  • activity 75
  • freshness 100
  • community 87

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Flask

Flask is a lightweight WSGI web application framework. It is designed to make getting started quick and easy, with the ability to scale up to complex applications. It began as a simple wrapper around Werkzeug and Jinja, and has become one of the most popular Python web application frameworks.

Flask offers suggestions, but doesn't enforce any dependencies or project layout. It is up to the developer to choose the tools and libraries they want to use. There are many extensions provided by the community that make adding new functionality easy.

A Simple Example

# save this as app.py
from flask import Flask

app = Flask(__name__)

@app.route("/")
def hello():
    return "Hello, World!"
$ flask run
  * Running on http://127.0.0.1:5000/ (Press CTRL+C to quit)

Donate

The Pallets organization develops and supports Flask and the libraries it uses. In order to grow the community of contributors and users, and allow the maintainers to devote more time to the projects, please donate today.

Contributing

See our detailed contributing documentation for many ways to contribute, including reporting issues, requesting features, asking or answering questions, and making PRs.

Created: Apr 6, 2010

Last push: Aug 16, 2026

Default branch: main

Latest release: 3.1.3

Languages

Share of the codebase by language, based on repository metadata from the host.

  • Python 99.9%
  • HTML 0.1%
  • Shell 0.0%
  • CSS 0.0%

Repository Radar analysis

Deterministic insights derived from public metadata and our observations — not personal testing or reviews.

Why this repository is interesting

  • High absolute popularity (72,163 stars) signals broad adoption.

Who should use it

  • Developers working primarily with Python

Potential use cases

  • Reference or evaluate Python open-source approaches in this domain

Strengths

  • README present in our index
  • Declared license: BSD 3-Clause "New" or "Revised" License
  • Substantial fork count (16,958) suggests reuse and contribution interest

Limitations / considerations

  • Insights are derived from public metadata and our observations — not a substitute for code review

What to watch

  • Re-check last push, issues, and releases on GitHub before production adoption

Strong signals: Strong community interest

Source: GitHub (public metadata) + Repository Radar analysis. We do not claim ownership of third-party repositories.

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