PyPI Ranking home
1st simplejson

Simple, fast, extensible JSON encoder/decoder for Python

92,507,036
2nd setuptools

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

47,203,675
3rd distribute

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

40,371,105
4th requests

Python HTTP for Humans.

38,586,429
5th virtualenv

Virtual Python Environment builder

38,585,037
6th pip

pip installs packages. Python packages. An easy_install replacement

35,290,820
7th certifi

Mozilla's SSL Certs.

34,257,611
8th boto

Amazon Web Services Library

33,977,346
9th six

Python 2 and 3 compatibility utilities

33,501,984
10th wincertstore

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

29,981,706
11th pbr

Python Build Reasonableness

28,800,563
12th python-dateutil

Extensions to the standard python 3.0+ datetime module

27,152,189
13th nose

nose extends unittest to make testing easier

22,722,447
14th lxml

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

22,463,088
15th Jinja2

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

21,540,154
16th MarkupSafe

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

19,977,301
17th docutils

Docutils -- Python Documentation Utilities

19,950,732
18th pytz

World timezone definitions, modern and historical

18,796,306
19th pyasn1

ASN.1 library for Python

18,765,801
20th PyYAML

YAML parser and emitter for Python

18,232,068
21st pika

Pika Python AMQP Client Library

17,875,507
22nd pycrypto

Cryptographic modules for Python.

16,452,210
23rd rsa

Pure-Python RSA implementation

15,323,759
24th coverage

Code coverage measurement for Python

15,256,701
25th Django

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

14,861,042
26th psycopg2

Python-PostgreSQL Database Adapter

14,588,291
27th colorama

Cross-platform colored terminal text.

13,764,246
28th botocore

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

13,352,504
29th awscli

Universal Command Line Environment for AWS.

12,756,626
30th paramiko

SSH2 protocol library

12,723,926
31st cffi

Foreign Function Interface for Python calling C code.

12,616,817
32nd jmespath

JSON Matching Expressions

12,231,512
33rd SQLAlchemy

Database Abstraction Library

11,760,574
34th pycparser

C parser in Python

11,308,898
35th selenium

Python bindings for Selenium

11,148,030
36th ecdsa

ECDSA cryptographic signature library (pure python)

11,010,800
37th bcdoc

ReST document generation tools for botocore.

10,944,949
38th supervisor

A system for controlling process state under UNIX

10,917,058
39th zc.buildout

System for managing development buildouts

10,866,448
40th redis

Python client for Redis key-value store

10,731,524
41st Werkzeug

The Swiss Army knife of Python web development

10,511,662
42nd Paste

Tools for using a Web Server Gateway Interface stack

10,028,168
43rd ssl

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

9,970,277
44th meld3

meld3 is an HTML/XML templating engine.

9,711,327
45th mock

A Python Mocking and Patching Library for Testing

9,684,348
46th carbon

Backend data caching and persistence daemon for Graphite

9,439,753
47th pymongo

Python driver for MongoDB

9,356,038
48th httplib2

A comprehensive HTTP client library.

9,352,850
49th Flask

A microframework based on Werkzeug, Jinja2 and good intentions

9,339,739
50th pep8

Python style guide checker

9,105,746