PyPI Ranking home
1st simplejson

Simple, fast, extensible JSON encoder/decoder for Python

182,739,575
2nd setuptools

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

63,758,431
3rd six

Python 2 and 3 compatibility utilities

54,950,976
4th requests

Python HTTP for Humans.

53,961,784
5th virtualenv

Virtual Python Environment builder

46,718,553
6th pip

pip installs packages. Python packages. An easy_install replacement

46,683,031
7th distribute

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

43,653,961
8th python-dateutil

Extensions to the standard python 3.0+ datetime module

40,294,908
9th certifi

Mozilla's SSL Certs.

40,255,065
10th boto

Amazon Web Services Library

39,863,297
11th pbr

Python Build Reasonableness

36,266,846
12th wincertstore

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

34,279,054
13th docutils

Docutils -- Python Documentation Utilities

32,384,615
14th pyasn1

ASN.1 library for Python

32,080,664
15th PyYAML

YAML parser and emitter for Python

31,187,268
16th Jinja2

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

29,235,056
17th MarkupSafe

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

28,424,794
18th pytz

World timezone definitions, modern and historical

27,274,457
19th nose

nose extends unittest to make testing easier

26,967,202
20th lxml

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

26,859,463
21st pycrypto

Cryptographic modules for Python.

25,149,446
22nd rsa

Pure-Python RSA implementation

24,867,479
23rd colorama

Cross-platform colored terminal text.

23,305,345
24th botocore

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

22,592,831
25th cffi

Foreign Function Interface for Python calling C code.

22,297,207
26th awscli

Universal Command Line Environment for AWS.

20,843,084
27th coverage

Code coverage measurement for Python

20,628,750
28th jmespath

JSON Matching Expressions

20,563,872
29th pycparser

C parser in Python

19,999,901
30th pika

Pika Python AMQP Client Library

19,967,479
31st Django

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

19,012,909
32nd psycopg2

Python-PostgreSQL Database Adapter

18,494,339
33rd paramiko

SSH2 protocol library

17,588,385
34th ecdsa

ECDSA cryptographic signature library (pure python)

16,393,643
35th SQLAlchemy

Database Abstraction Library

15,423,285
36th mock

A Python Mocking and Patching Library for Testing

15,312,191
37th redis

Python client for Redis key-value store

14,767,408
38th Werkzeug

The Swiss Army knife of Python web development

14,080,114
39th selenium

Python bindings for Selenium

13,598,489
40th bcdoc

ReST document generation tools for botocore.

13,189,266
41st supervisor

A system for controlling process state under UNIX

13,113,608
42nd pep8

Python style guide checker

12,960,047
43rd httplib2

A comprehensive HTTP client library.

12,782,616
44th Flask

A microframework based on Werkzeug, Jinja2 and good intentions

12,589,687
45th pymongo

Python driver for MongoDB

11,848,837
46th zc.buildout

System for managing development buildouts

11,843,053
47th psutil

A process utilities module for Python

11,750,760
48th MySQL-python

Python interface to MySQL

11,555,841
49th argparse

Python command-line parsing library

11,366,156
50th carbon

Backend data caching and persistence daemon for Graphite

11,348,979