15 Must‑Know Python Open‑Source Frameworks for Modern Development

We have compiled fifteen of the most popular Python open‑source frameworks from GitHub, covering event I/O, OLAP, web development, high‑performance networking, testing, and web crawling.

1. Django: Python Web application framework

Django is the most famous Python framework, known for its fully automated admin interface; defining simple ORM models automatically generates database schemas and a complete management backend.

2. Diesel: Greenlet‑based event I/O framework

Diesel offers a clean API for building network clients and servers, supporting both TCP and UDP.

3. Flask: Lightweight Python web framework

Flask is a micro‑framework built on Werkzeug and Jinja2, extensible via extensions, and does not include a default database or authentication tools.

4. Cubes: Lightweight Python OLAP framework

Cubes provides tools for OLAP, multidimensional analysis, and browsing aggregated data.

5. Kartograph.py: Lightweight vector‑map creation framework

Kartograph generates SVG maps for ESRI; the library is still in beta and can be tested in a virtualenv.

6. Pulsar: Event‑driven concurrent framework

Pulsar enables writing asynchronous servers that run activities across multiple processes or threads.

7. Web2py: Full‑stack web framework

Web2py aims for rapid, secure, and portable web development with built‑in database support and compatibility with Google App Engine.

8. Falcon: High‑performance cloud API and web backend framework

Falcon encourages RESTful design and lets developers accomplish a lot with minimal effort.

9. Dpark: Python implementation of Spark

Dpark is a Python clone of Spark, providing a distributed computing framework for large‑scale data processing and iterative calculations, widely used within Douban.

10. Buildbot: Python‑based continuous integration testing framework

Buildbot automates building, testing, and releasing software across multiple platforms whenever code changes.

11. Zerorpc: High‑performance distributed RPC framework based on ZeroMQ

Zerorpc implements RPC using ZeroMQ and MessagePack, offering both programmatic and command‑line invocation.

12. Bottle: Micro Python web framework

Bottle is a single‑file WSGI micro‑framework that depends only on the Python standard library.

13. Tornado: Asynchronous non‑blocking I/O Python web framework

Tornado serves both as a web server and a Python web development framework, originally created for FriendFeed and later open‑sourced by Facebook.

14. webpy: Lightweight Python web framework

webpy follows the "keep it simple and powerful" philosophy, providing only the essentials without URL routing, templating, or database layers.

15. Scrapy: Python web‑crawling framework

Scrapy is a lightweight, easy‑to‑use framework for building web crawlers and spiders.