PyPI Ranking home
1st simplejson

Simple, fast, extensible JSON encoder/decoder for Python

4,006,549
2nd setuptools

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

901,266
3rd six

Python 2 and 3 compatibility utilities

664,451
4th pip

pip installs packages. Python packages. An easy_install replacement

507,711
5th pyasn1

ASN.1 library for Python

473,028
6th rsa

Pure-Python RSA implementation

449,010
7th requests

Python HTTP for Humans.

440,174
8th pbr

Python Build Reasonableness

382,488
9th python-dateutil

Extensions to the standard python 3.0+ datetime module

367,358
10th docutils

Docutils -- Python Documentation Utilities

324,700
11th MarkupSafe

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

324,331
12th pytz

World timezone definitions, modern and historical

312,578
13th tornado

Tornado is an open source version of the scalable, non-blocking web server and and tools that power FriendFeed

307,331
14th virtualenv

Virtual Python Environment builder

300,875
15th Jinja2

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

299,377
16th PyYAML

YAML parser and emitter for Python

291,149
17th pycrypto

Cryptographic modules for Python.

262,648
18th certifi

Mozilla's SSL Certs.

254,770
19th pycparser

C parser in Python

254,072
20th boto

Amazon Web Services Library

252,691
21st cffi

Foreign Function Interface for Python calling C code.

248,342
22nd colorama

Cross-platform colored terminal text.

229,540
23rd uritemplate

URI Templates

222,405
24th wincertstore

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

211,612
25th coverage

Code coverage measurement for Python

210,916
26th oauth2client

OAuth 2.0 client library

195,895
27th botocore

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

193,208
28th psycopg2

Python-PostgreSQL Database Adapter

174,643
29th awscli

Universal Command Line Environment for AWS.

174,411
30th psutil

A process utilities module for Python

174,296
31st mock

A Python Mocking and Patching Library for Testing

174,095
32nd jmespath

JSON Matching Expressions

172,939
33rd google-api-python-client

Google API Client Library for Python

167,031
34th wheel

A built-package format for Python.

165,242
35th Django

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

160,357
36th SQLAlchemy

Database Abstraction Library

159,380
37th ecdsa

ECDSA cryptographic signature library (pure python)

159,192
38th Babel

Internationalization utilities

157,862
39th argparse

Python command-line parsing library

150,555
40th httplib2

A comprehensive HTTP client library.

150,247
41st paramiko

SSH2 protocol library

148,611
42nd cryptography

cryptography is a package which provides cryptographic recipes and primitives to Python developers.

147,460
43rd lxml

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

145,718
44th pep8

Python style guide checker

145,590
45th distribute

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

143,927
46th enum34

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

137,451
47th ipaddress

IPv4/IPv6 manipulation library

135,138
48th nose

nose extends unittest to make testing easier

133,400
49th Werkzeug

The Swiss Army knife of Python web development

132,142
50th pyOpenSSL

Python wrapper module around the OpenSSL library

130,160