PyPI Ranking home
1st lxml

Powerful and Pythonic XML processing library combining libxml2/libxslt with the ElementTree API.

9,183,019
2nd distribute

Easily download, build, install, upgrade, and uninstall Python packages

7,487,115
3rd boto

Amazon Web Services Library

6,116,027
4th zc.buildout

System for managing development buildouts

5,359,988
5th pip

pip installs packages. Python packages. An easy_install replacement

5,138,619
6th simplejson

Simple, fast, extensible JSON encoder/decoder for Python

4,248,558
7th setuptools

Download, build, install, upgrade, and uninstall Python packages -- easily!

3,372,391
8th requests

Python HTTP for Humans.

3,317,176
9th Django

A high-level Python Web framework that encourages rapid development and clean, pragmatic design.

3,146,086
10th Paste

Tools for using a Web Server Gateway Interface stack

3,123,236
11th Jinja2

A small but fast and easy to use stand-alone template engine written in pure python.

3,027,700
12th virtualenv

Virtual Python Environment builder

2,991,401
13th nose

nose extends unittest to make testing easier

2,759,663
14th PasteDeploy

Load, configure, and compose WSGI applications and servers

2,752,703
15th psycopg2

Python-PostgreSQL Database Adapter

2,669,069
16th python-dateutil

Extensions to the standard python 3.0+ datetime module

2,216,520
17th SQLAlchemy

Database Abstraction Library

2,066,285
18th coverage

Code coverage measurement for Python

2,048,598
19th pycrypto

Cryptographic modules for Python.

1,983,830
20th PasteScript

A pluggable command-line frontend, including commands to setup package file layouts

1,838,879
21st Flask

A microframework based on Werkzeug, Jinja2 and good intentions

1,761,865
22nd Werkzeug

The Swiss Army knife of Python web development

1,752,751
23rd Fabric

Fabric is a simple, Pythonic tool for remote execution and deployment.

1,685,980
24th pymongo

Python driver for MongoDB

1,645,765
25th kombu

AMQP Messaging Framework for Python

1,627,068
26th MySQL-python

Python interface to MySQL

1,557,107
27th South

South: Migrations for Django

1,535,535
28th paramiko

SSH2 protocol library

1,519,295
29th zope.interface

Interfaces for Python

1,512,455
30th celery

Distributed Task Queue

1,490,685
31st anyjson

Wraps the best available JSON implementation available in a common interface

1,333,459
32nd httplib2

A comprehensive HTTP client library.

1,303,717
33rd pytz

World timezone definitions, modern and historical

1,293,773
34th greenlet

Lightweight in-process concurrent programming

1,285,090
35th gunicorn

WSGI HTTP Server for UNIX

1,250,970
36th six

Python 2 and 3 compatibility utilities

1,245,330
37th Pygments

Pygments is a syntax highlighting package written in Python.

1,212,816
38th meld3

meld3 is an HTML/XML templating engine.

1,153,916
39th graphite-web

Enterprise scalable realtime graphing

1,131,791
40th WebOb

WSGI request and response object

1,124,585
41st Mako

A super-fast templating language that borrows the best ideas from the existing templating languages.

1,079,740
42nd setuptools-git

Setuptools revision control system plugin for Git

1,074,896
43rd supervisor

A system for controlling process state under UNIX

1,048,434
44th carbon

Backend data caching and persistence daemon for Graphite

1,044,378
45th selenium

Python bindings for Selenium

1,026,543
46th suds

Lightweight SOAP client

960,109
47th MarkupSafe

Implements a XML/HTML/XHTML Markup safe string for Python

937,259
48th zc.recipe.egg

Recipe for installing Python package distributions as eggs

922,249
49th msgpack-python

MessagePack (de)serializer.

897,824
50th redis

Python client for Redis key-value store

895,177