PyPI Ranking home
1st distribute

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

35,957,324
2nd virtualenv

Virtual Python Environment builder

31,956,769
3rd setuptools

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

29,579,733
4th certifi

Mozilla's SSL Certs.

28,271,429
5th requests

Python HTTP for Humans.

28,090,908
6th boto

Amazon Web Services Library

27,397,110
7th wincertstore

Python module to extract CA and CRL certs from Windows' cert store (ctypes based).

25,402,949
8th pip

pip installs packages. Python packages. An easy_install replacement

23,449,879
9th six

Python 2 and 3 compatibility utilities

21,289,715
10th pbr

Python Build Reasonableness

20,756,750
11th python-dateutil

Extensions to the standard python 3.0+ datetime module

19,897,148
12th lxml

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

19,385,318
13th nose

nose extends unittest to make testing easier

19,176,181
14th simplejson

Simple, fast, extensible JSON encoder/decoder for Python

17,284,992
15th pika

Pika Python AMQP Client Library

15,517,162
16th Jinja2

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

15,246,046
17th MarkupSafe

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

13,326,907
18th docutils

Docutils -- Python Documentation Utilities

13,031,397
19th pytz

World timezone definitions, modern and historical

12,281,370
20th PyYAML

YAML parser and emitter for Python

12,011,780
21st Django

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

11,381,441
22nd psycopg2

Python-PostgreSQL Database Adapter

11,145,668
23rd pyasn1

ASN.1 library for Python

10,963,738
24th pycrypto

Cryptographic modules for Python.

10,926,849
25th coverage

Code coverage measurement for Python

10,817,422
26th zc.buildout

System for managing development buildouts

9,762,704
27th paramiko

SSH2 protocol library

9,648,859
28th Paste

Tools for using a Web Server Gateway Interface stack

9,282,482
29th ssl

SSL wrapper for socket objects (2.3, 2.4, 2.5 compatible)

9,199,730
30th colorama

Cross-platform colored terminal text.

9,018,578
31st supervisor

A system for controlling process state under UNIX

8,824,877
32nd SQLAlchemy

Database Abstraction Library

8,670,258
33rd botocore

Low-level, data-driven core of boto 3.

8,614,563
34th selenium

Python bindings for Selenium

8,580,932
35th rsa

Pure-Python RSA implementation

8,360,229
36th awscli

Universal Command Line Environment for AWS.

8,358,873
37th jmespath

JSON Matching Expressions

8,293,533
38th meld3

meld3 is an HTML/XML templating engine.

8,286,249
39th bcdoc

ReST document generation tools for botocore.

8,047,214
40th redis

Python client for Redis key-value store

8,016,973
41st ecdsa

ECDSA cryptographic signature library (pure python)

7,904,351
42nd Werkzeug

The Swiss Army knife of Python web development

7,831,769
43rd PasteDeploy

Load, configure, and compose WSGI applications and servers

7,501,708
44th carbon

Backend data caching and persistence daemon for Graphite

7,242,240
45th cffi

Foreign Function Interface for Python calling C code.

6,973,508
46th Flask

A microframework based on Werkzeug, Jinja2 and good intentions

6,964,174
47th MySQL-python

Python interface to MySQL

6,814,052
48th pymongo

Python driver for MongoDB

6,730,277
49th graphite-web

Enterprise scalable realtime graphing

6,585,245
50th httplib2

A comprehensive HTTP client library.

6,228,715