PyPI Ranking home
1st simplejson

Simple, fast, extensible JSON encoder/decoder for Python

797,315
2nd setuptools

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

625,455
3rd requests

Python HTTP for Humans.

476,193
4th six

Python 2 and 3 compatibility utilities

451,655
5th pbr

Python Build Reasonableness

357,601
6th pip

pip installs packages. Python packages. An easy_install replacement

332,958
7th boto

Amazon Web Services Library

316,018
8th docutils

Docutils -- Python Documentation Utilities

309,659
9th certifi

Mozilla's SSL Certs.

307,335
10th pyasn1

ASN.1 library for Python

292,811
11th virtualenv

Virtual Python Environment builder

276,651
12th PyYAML

YAML parser and emitter for Python

260,254
13th python-dateutil

Extensions to the standard python 3.0+ datetime module

257,300
14th wincertstore

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

254,662
15th MarkupSafe

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

251,273
16th Jinja2

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

250,398
17th colorama

Cross-platform colored terminal text.

244,239
18th pytz

World timezone definitions, modern and historical

239,752
19th rsa

Pure-Python RSA implementation

226,893
20th distribute

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

226,863
21st botocore

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

224,893
22nd pycrypto

Cryptographic modules for Python.

221,338
23rd cffi

Foreign Function Interface for Python calling C code.

220,276
24th jmespath

JSON Matching Expressions

216,987
25th awscli

Universal Command Line Environment for AWS.

212,369
26th nose

nose extends unittest to make testing easier

210,458
27th googlefinance

Python module to get stock data from Google Finance API

203,671
28th bcdoc

ReST document generation tools for botocore.

198,157
29th coverage

Code coverage measurement for Python

188,714
30th pycparser

C parser in Python

179,526
31st Django

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

156,916
32nd psutil

A process utilities module for Python

149,688
33rd pika

Pika Python AMQP Client Library

142,057
34th selenium

Python bindings for Selenium

135,552
35th pep8

Python style guide checker

133,393
36th docopt

Pythonic option parser, that will make you smile

127,799
37th mock

A Python Mocking and Patching Library for Testing

127,178
38th argparse

Python command-line parsing library

122,114
39th enum34

Python 3.4 Enum backported to 3.3, 3.2, 3.1, 2.7, 2.6, 2.5, and 2.4

119,621
40th psycopg2

Python-PostgreSQL Database Adapter

117,647
41st paramiko

SSH2 protocol library

117,214
42nd Babel

Internationalization utilities

114,178
43rd redis

Python client for Redis key-value store

112,183
44th pymongo

Python driver for MongoDB

110,565
45th ecdsa

ECDSA cryptographic signature library (pure python)

110,392
46th SQLAlchemy

Database Abstraction Library

105,415
47th lxml

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

103,726
48th httplib2

A comprehensive HTTP client library.

103,077
49th setuptools-git

Setuptools revision control system plugin for Git

102,050
50th Werkzeug

The Swiss Army knife of Python web development

101,302