PyPI Ranking home
1st simplejson

Simple, fast, extensible JSON encoder/decoder for Python

40,556,696
2nd distribute

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

38,278,757
3rd setuptools

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

36,523,153
4th virtualenv

Virtual Python Environment builder

34,820,245
5th requests

Python HTTP for Humans.

33,197,170
6th boto

Amazon Web Services Library

30,585,216
7th certifi

Mozilla's SSL Certs.

30,528,819
8th wincertstore

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

27,537,612
9th pip

pip installs packages. Python packages. An easy_install replacement

26,995,734
10th six

Python 2 and 3 compatibility utilities

25,011,694
11th pbr

Python Build Reasonableness

23,721,402
12th python-dateutil

Extensions to the standard python 3.0+ datetime module

22,677,356
13th nose

nose extends unittest to make testing easier

21,066,125
14th lxml

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

20,585,533
15th Jinja2

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

17,982,793
16th pika

Pika Python AMQP Client Library

16,603,402
17th MarkupSafe

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

16,175,356
18th docutils

Docutils -- Python Documentation Utilities

16,139,049
19th pytz

World timezone definitions, modern and historical

14,968,598
20th PyYAML

YAML parser and emitter for Python

14,785,434
21st pyasn1

ASN.1 library for Python

13,425,177
22nd pycrypto

Cryptographic modules for Python.

13,404,542
23rd Django

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

12,979,481
24th coverage

Code coverage measurement for Python

12,786,533
25th psycopg2

Python-PostgreSQL Database Adapter

12,554,819
26th paramiko

SSH2 protocol library

10,918,909
27th botocore

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

10,896,850
28th colorama

Cross-platform colored terminal text.

10,816,129
29th awscli

Universal Command Line Environment for AWS.

10,610,687
30th rsa

Pure-Python RSA implementation

10,262,422
31st zc.buildout

System for managing development buildouts

10,245,060
32nd jmespath

JSON Matching Expressions

10,237,185
33rd selenium

Python bindings for Selenium

9,924,493
34th SQLAlchemy

Database Abstraction Library

9,919,070
35th bcdoc

ReST document generation tools for botocore.

9,886,843
36th supervisor

A system for controlling process state under UNIX

9,756,994
37th Paste

Tools for using a Web Server Gateway Interface stack

9,678,507
38th ssl

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

9,444,354
39th cffi

Foreign Function Interface for Python calling C code.

9,434,167
40th ecdsa

ECDSA cryptographic signature library (pure python)

9,232,057
41st redis

Python client for Redis key-value store

9,195,323
42nd meld3

meld3 is an HTML/XML templating engine.

9,003,668
43rd Werkzeug

The Swiss Army knife of Python web development

8,963,292
44th pycparser

C parser in Python

8,195,766
45th carbon

Backend data caching and persistence daemon for Graphite

8,042,209
46th Flask

A microframework based on Werkzeug, Jinja2 and good intentions

7,987,872
47th pymongo

Python driver for MongoDB

7,916,012
48th MySQL-python

Python interface to MySQL

7,864,606
49th PasteDeploy

Load, configure, and compose WSGI applications and servers

7,757,562
50th mock

A Python Mocking and Patching Library for Testing

7,428,629