PyPI Ranking home
1st simplejson

Simple, fast, extensible JSON encoder/decoder for Python

76,433,676
2nd setuptools

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

44,652,506
3rd distribute

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

39,582,411
4th virtualenv

Virtual Python Environment builder

37,516,160
5th requests

Python HTTP for Humans.

37,357,715
6th certifi

Mozilla's SSL Certs.

33,573,994
7th boto

Amazon Web Services Library

32,839,477
8th pip

pip installs packages. Python packages. An easy_install replacement

32,317,811
9th six

Python 2 and 3 compatibility utilities

31,920,013
10th wincertstore

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

29,388,577
11th pbr

Python Build Reasonableness

27,927,144
12th python-dateutil

Extensions to the standard python 3.0+ datetime module

25,951,066
13th nose

nose extends unittest to make testing easier

22,247,034
14th lxml

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

21,817,331
15th Jinja2

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

20,652,869
16th MarkupSafe

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

19,078,546
17th docutils

Docutils -- Python Documentation Utilities

18,952,384
18th pytz

World timezone definitions, modern and historical

17,836,025
19th pika

Pika Python AMQP Client Library

17,687,295
20th pyasn1

ASN.1 library for Python

17,643,344
21st PyYAML

YAML parser and emitter for Python

17,409,825
22nd pycrypto

Cryptographic modules for Python.

15,761,265
23rd coverage

Code coverage measurement for Python

14,647,792
24th Django

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

14,397,506
25th rsa

Pure-Python RSA implementation

14,322,355
26th psycopg2

Python-PostgreSQL Database Adapter

14,036,268
27th botocore

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

12,709,433
28th colorama

Cross-platform colored terminal text.

12,701,476
29th awscli

Universal Command Line Environment for AWS.

12,281,707
30th paramiko

SSH2 protocol library

12,241,988
31st cffi

Foreign Function Interface for Python calling C code.

11,978,427
32nd jmespath

JSON Matching Expressions

11,724,243
33rd SQLAlchemy

Database Abstraction Library

11,298,995
34th selenium

Python bindings for Selenium

10,864,866
35th bcdoc

ReST document generation tools for botocore.

10,764,238
36th zc.buildout

System for managing development buildouts

10,686,436
37th ecdsa

ECDSA cryptographic signature library (pure python)

10,652,789
38th pycparser

C parser in Python

10,636,688
39th supervisor

A system for controlling process state under UNIX

10,634,091
40th redis

Python client for Redis key-value store

10,277,557
41st Werkzeug

The Swiss Army knife of Python web development

10,120,609
42nd Paste

Tools for using a Web Server Gateway Interface stack

9,951,108
43rd ssl

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

9,766,121
44th meld3

meld3 is an HTML/XML templating engine.

9,525,093
45th mock

A Python Mocking and Patching Library for Testing

9,082,373
46th pymongo

Python driver for MongoDB

9,024,643
47th Flask

A microframework based on Werkzeug, Jinja2 and good intentions

8,989,211
48th carbon

Backend data caching and persistence daemon for Graphite

8,953,026
49th MySQL-python

Python interface to MySQL

8,698,579
50th pep8

Python style guide checker

8,676,310