| Rank | Name | Description | DL Count | Author | Keywords |
|---|---|---|---|---|---|
| 1 | lxml | Powerful and Pythonic XML processing library combining libxml2/libxslt with the ElementTree API. | 3352355 | ||
| 2 | zc.buildout | System for managing development buildouts | 3297977 | development build | |
| 3 | setuptools | Download, build, install, upgrade, and uninstall Python packages -- easily! | 1940837 | cpan pypi distutils eggs package management | |
| 4 | pip | pip installs packages. Python packages. An easy_install replacement | 1466312 | easy_install distutils setuptools egg virtualenv | |
| 5 | Paste | Tools for using a Web Server Gateway Interface stack | 1451268 | web application server wsgi | |
| 6 | simplejson | Simple, fast, extensible JSON encoder/decoder for Python | 1400819 | ||
| 7 | PasteDeploy | Load, configure, and compose WSGI applications and servers | 1182968 | web wsgi application server | |
| 8 | virtualenv | Virtual Python Environment builder | 884992 | setuptools deployment installation distutils | |
| 9 | SQLAlchemy | Database Abstraction Library | 810289 | ||
| 10 | Deliverance | Deliverance transforms HTML to theme pages | 674774 | wsgi theming html | |
| 11 | Django | A high-level Python Web framework that encourages rapid development and clean, pragmatic design. | 652992 | ||
| 12 | Jinja2 | A small but fast and easy to use stand-alone template engine written in pure python. | 649538 | ||
| 13 | PasteScript | A pluggable command-line frontend, including commands to setup package file layouts | 633553 | web wsgi setuptools framework command-line setup | |
| 14 | zope.interface | Interfaces for Python | 623709 | ||
| 15 | nose | nose extends unittest to make testing easier | 554191 | test unittest doctest automatic discovery | |
| 16 | zc.recipe.egg | Recipe for installing Python package distributions as eggs | 509706 | development build | |
| 17 | distribute | Easily download, build, install, upgrade, and uninstall Python packages | 501646 | cpan pypi distutils eggs package management | |
| 18 | boto | Amazon Web Services Library | 465636 | ||
| 19 | pycrypto | Cryptographic modules for Python. | 449562 | ||
| 20 | South | South: Migrations for Django | 413206 | ||
| 21 | Fabric | Fabric is a simple, Pythonic tool for remote execution and deployment. | 408058 | ||
| 22 | coverage | Code coverage measurement for Python | 402254 | code coverage testing | |
| 23 | eggtestinfo | Add test information to .egg-info | 401720 | setuptools eggs testing | |
| 24 | Mako | A super-fast templating language that borrows the best ideas from the existing templating languages. | 398277 | wsgi myghty mako | |
| 25 | greenlet | Lightweight in-process concurrent programming | 396539 | ||
| 26 | MySQL-python | Python interface to MySQL | 381365 | ||
| 27 | FormEncode | HTML form validation, generation, and conversion package | 361756 | ||
| 28 | WebOb | WSGI request and response object | 358968 | wsgi request web http | |
| 29 | pytz | World timezone definitions, modern and historical | 354687 | timezone tzinfo datetime olson time | |
| 30 | Pygments | Pygments is a syntax highlighting package written in Python. | 335866 | syntax highlighting | |
| 31 | anyjson | Wraps the best available JSON implementation available in a common interface | 307537 | json | |
| 32 | Beaker | A Session and Caching library with WSGI Middleware | 297415 | wsgi myghty session web cache middleware | |
| 33 | MarkupSafe | Implements a XML/HTML/XHTML Markup safe string for Python | 290531 | ||
| 34 | zope.testing | Zope testing framework, including the testrunner script. | 285944 | ||
| 35 | pymongo | Python driver for MongoDB <http://www.mongodb.org> | 284753 | mongo mongodb pymongo gridfs | |
| 36 | zope.component | Zope Component Architecture | 277580 | ||
| 37 | Werkzeug | The Swiss Army knife of Python web development | 267179 | ||
| 38 | paramiko | SSH2 protocol library | 263407 | ||
| 39 | docutils | Docutils -- Python Documentation Utilities | 262934 | ||
| 40 | decorator | Better living through Python with decorators | 262918 | decorators generic utility | |
| 41 | celery | Distributed Task Queue | 255408 | ||
| 42 | python-dateutil | Extensions to the standard python 2.3+ datetime module | 254669 | ||
| 43 | zope.event | Very basic event publishing system | 252548 | ||
| 44 | amqplib | Client library for AMQP (Advanced Message Queuing Protocol) | 247674 | amqp | |
| 45 | unittest2 | The new features in unittest for Python 2.7 backported to Python 2.4+. | 246381 | unittest testing tests | |
| 46 | multiprocessing | Backport of the multiprocessing package to Python 2.4 and 2.5 | 237534 | ||
| 47 | zope.schema | zope.interface extension for defining data schemas | 233792 | ||
| 48 | plone.recipe.zope2instance | ZC Buildout recipe for installing a Zope 2 instance | 233711 | zope2 buildout | |
| 49 | gunicorn | WSGI HTTP Server for UNIX | 229491 | ||
| 50 | Tempita | A very small text templating language | 229196 | templating template language html |