PyPI Ranking home
1st simplejson

Simple, fast, extensible JSON encoder/decoder for Python

179,443,597
2nd setuptools

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

63,161,532
3rd six

Python 2 and 3 compatibility utilities

54,950,976
4th requests

Python HTTP for Humans.

53,361,168
5th virtualenv

Virtual Python Environment builder

46,418,140
6th pip

pip installs packages. Python packages. An easy_install replacement

46,054,914
7th distribute

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

43,545,521
8th certifi

Mozilla's SSL Certs.

40,255,065
9th python-dateutil

Extensions to the standard python 3.0+ datetime module

39,606,633
10th boto

Amazon Web Services Library

39,527,440
11th pbr

Python Build Reasonableness

36,266,846
12th wincertstore

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

34,197,020
13th pyasn1

ASN.1 library for Python

32,080,664
14th docutils

Docutils -- Python Documentation Utilities

31,736,833
15th PyYAML

YAML parser and emitter for Python

30,785,700
16th Jinja2

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

29,004,197
17th MarkupSafe

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

28,171,318
18th pytz

World timezone definitions, modern and historical

27,013,085
19th nose

nose extends unittest to make testing easier

26,852,888
20th lxml

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

26,720,267
21st pycrypto

Cryptographic modules for Python.

24,886,187
22nd rsa

Pure-Python RSA implementation

24,867,479
23rd cffi

Foreign Function Interface for Python calling C code.

22,156,887
24th botocore

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

22,016,184
25th colorama

Cross-platform colored terminal text.

21,794,784
26th coverage

Code coverage measurement for Python

20,476,392
27th awscli

Universal Command Line Environment for AWS.

20,424,923
28th jmespath

JSON Matching Expressions

20,023,514
29th pika

Pika Python AMQP Client Library

19,967,479
30th pycparser

C parser in Python

19,917,476
31st Django

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

18,888,780
32nd psycopg2

Python-PostgreSQL Database Adapter

18,390,643
33rd paramiko

SSH2 protocol library

17,445,275
34th ecdsa

ECDSA cryptographic signature library (pure python)

16,326,524
35th SQLAlchemy

Database Abstraction Library

15,332,317
36th mock

A Python Mocking and Patching Library for Testing

15,150,803
37th redis

Python client for Redis key-value store

14,678,751
38th Werkzeug

The Swiss Army knife of Python web development

13,966,133
39th selenium

Python bindings for Selenium

13,540,646
40th bcdoc

ReST document generation tools for botocore.

13,174,686
41st supervisor

A system for controlling process state under UNIX

13,052,661
42nd pep8

Python style guide checker

12,838,001
43rd Flask

A microframework based on Werkzeug, Jinja2 and good intentions

12,487,448
44th httplib2

A comprehensive HTTP client library.

12,466,950
45th zc.buildout

System for managing development buildouts

11,812,864
46th pymongo

Python driver for MongoDB

11,787,944
47th psutil

A process utilities module for Python

11,750,760
48th MySQL-python

Python interface to MySQL

11,468,683
49th argparse

Python command-line parsing library

11,366,156
50th carbon

Backend data caching and persistence daemon for Graphite

11,188,946