The Python programming language is actively used by many people, both in industry and academia for a wide variety of purposes.

Integrated development environments

• Boa Constructor, a cross-platform IDE for Python development
• EasyEclipse, an open source IDE for Python and other languages
• Eclipse with the Pydev plug-in. Eclipse supports many other languages as well.
• Eric, an IDE for Python and Ruby
• Geany, IDE for Python development and other languages
• Komodo IDE an IDE for Python, Perl, PHP and Ruby
• NCLab enables free Python programming in the web browser. Supports Scipy, Numpy, Pylab, Matplotlib, Sympy and other Python libraries.
• NetBeans, is written in Java and runs everywhere where a JVM is installed.
• Ninja IDE, free software, written in Python, Ninja name stands for Ninja-ide Is Not Just Another IDE
• PIDA, open source IDE written in Python capable of embedding other text editors, such as Vim
• PyCharm, a proprietary IDE for Python development
• PyScripter, Free and open-source software Python IDE for Windows.
• PyStudio, a free Python IDE with Pylint syntax checking and fully integrated Winpdb debugger
• PythonAnywhere, an online IDE and Web hosting service
• Python Tools for Visual Studio, Free and open-source plug-in for Visual Studio.
• Spyder, a cross-platform editor for Python, in Python, with good integration with scientific tools.
• Stani's Python Editor (SPE), a cross-platform IDE for Python development
• Webware for Python, a suite of programming tools for constructing web-based applications in Python
• Wing IDE, an IDE for Python

Applications

• Anki, a spaced repetition flashcard program
• Bazaar, a free distributed revision control system
• BitTorrent, original client, along with several derivatives
• Blender 3D (software), 3D art and animation program with a game engine. Allows for Python scripting in the game engine and in modelling and animation.
• BuildBot, a continuous integration system
• Calibre, an open source e-book management tool
• Chandler, a personal information manager including calendar, email, tasks and notes support that is not currently under development
• Cinema 4D, a 3D art and animation program for creating intros and 3-Dimensional text. Has a built in Python scripting console and engine.
• Decibel Audio Player, an open source audio player
• Deluge, a BitTorrent client for GNOME
• Dropbox, a web-based file hosting service
• emesene, a MSN/WLM substitute
• Exaile, an open source audio player
• Friture, a real-time audio analyzer
• frePPLe an open source Production Planning system
• Gajim, an instant messaging client for the XMPP protocol
• GRAMPS, an open source genealogy software
• Gwibber, a microblogging client
• Juice, a popular podcast downloader
• Mercurial a cross-platform, distributed source management tool
• Miro, a cross-platform internet television application
• Morpheus, file-sharing client/server software operated by the company StreamCast
• MusicBrainz Picard, a cross-platform MusicBrainz tag editor
• Nicotine, a PyGTK Soulseek client
• OpenLP, lyrics projection software
• OpenShot Video Editor
• OpenStack, a cloud computing IaaS platform
• OpenTeacher, an opensource vocabulary training application
• p2ptube, Program to stream movies on the internet
• PiTiVi, a non-linear video editor
• Portage, the heart of Gentoo Linux, an advanced package management system based on the BSD-style ports system
• Quake Army Knife, an environment for developing 3D maps for games based on the Quake engine
• Quod Libet, a cross-platform free and open source music player, tag editor and library organizer
• Resolver One, a spreadsheet
• SABnzbd, A Usenet binaries downloader
• Sage (sagemath) combines more than 20 main opensource math packages and provides easy to use web interface with the help of Python
• SCons, a tool for building software
• Tryton, a three-tier high-level general purpose computer application platform
• Ubuntu Software Center, a graphical package manager, installed by default in Ubuntu 9.10 and higher
• Wammu, a mobile phone management utility
• Wicd, a network manager for Linux
• WikidPad, a free wiki-like outliner for personal thoughts, ideas, to-do lists, contacts, etc. with wiki-like linking between pages.
• YUM, a package management utility for RPM-compatible Linux operating systems

Web applications

• OpenERP, an open source comprehensive suite of business applications
• ERP5, a powerful open source ERP / CRM used in Aerospace, Apparel, Banking and for e-government
• GNU Mailman, one of the more popular packages for running email mailing lists
• MoinMoin, a popular wiki engine
• MootiroForm, an open source form creating software
• Planet, a feed aggregator
• Plone, a user-friendly and powerful open source content management system
• Roundup, a bug tracking system
• ViewVC, a web-based interface for browsing CVS and SVN repositories
• Trac, web-based bug/issue tracking database, wiki, and version control front-end
• Python Shell, A Python shell inside the Google Chrome browser.
• Turntable.fm, a social media site for interactively sharing music, currently in beta^{[citation needed]}

Video games

• Bridge Commander^{[citation needed]}
• Civilization IV uses Python for most of its tasks
• Battlefield 2 uses Python for all of its addons and a lot of its functionality^{[citation needed]}
• Eve Online uses Stackless Python
• Freedom Force^{[citation needed]}
• Frets on Fire is written in Python and uses Pygame
• The Temple of Elemental Evil, a computer role-playing game based on the classic Greyhawk Dungeons & Dragons campaign setting
• Vampire: The Masquerade – Bloodlines, a computer role-playing game based on the World of Darkness campaign setting^{[citation needed]}
• Vega Strike, an open source space simulator, uses Python for internal scripting
• Jewel Quest 5 uses Stackless Python, casual match3 game^{[citation needed]}
• World of Tanks uses Python for most of its tasks^{[citation needed]}

Web frameworks

• CherryPy, an object-oriented web application server and framework
• Django, an MVC (model, view, controller) web framework
• Flask, a modern, lightweight, well-documented microframework based on Werkzeug and Jinja 2
• Google App Engine, a platform for developing and hosting web applications in Google-managed data centers, including Python.
• Pylons, a lightweight web framework emphasizing flexibility and rapid development
• Pyramid, is a minimalistic web framework inspired by Zope, Pylons and Django
• Quixote, a framework for developing Web applications in Python
• Topsite Templating System, another Python-powered web framework
• TurboGears, a web framework combining SQLObject/SQLAlchemy, Kid/Genshi, and CherryPy/Pylons
• web2py, a full-stack enterprise web application framework, following the MVC design
• Zope, an application server, commonly used to build content management systems

Graphics frameworks

• Pygame, Python bindings for SDL
• Pyglet, a cross-platform windowing and multimedia library for Python
• Panda3D, a 3D game engine for Python
• Python Imaging Library, a module for working with images
• Python-Ogre, a Python Language binding for the OGRE 3D engine
• Soya3D, a high-level 3D game engine for Python
• Python Irrlicht, Python bindings for Irrlicht Engine
• PyCUDA, Python bindings for Nvidia CUDA

GUI frameworks

• PyGTK, a popular cross-platform GUI library based on GTK+; furthermore, other GNOME libraries also have bindings for Python
• PyQt, another cross-platform GUI library based on Qt; as above, KDE libraries have bindings too
• PySide, an alternative to the PyQt library
• wxPython, a port of wxWidgets and a cross-platform GUI library for Python

Scientific packages

• Biopython, a Python molecular biology suite
• NetworkX, a package for the creation, manipulation, and study of complex networks.
• SciPy, a library of scientific and numerical routines
• SimPy, a discrete-event simulation package
• stsci python, a library of Python routines and C extensions that has been developed to provide a general astronomical data analysis infrastructure, developed by STScI
• Veusz, a scientific plotting package
• VisTrails, a scientific workflow and provenance management software with visual programming interface and integrated visualization (via Matplotlib, VTK).
• p4vasp, a visualization suite for the Vienna Ab-initio Simulation Package (VASP)

Mathematical libraries

• Matplotlib, an extension providing MATLAB-like plotting and mathematical functions
• NumPy, a language extension that adds support for large and fast, multi-dimensional arrays and matrices
• PyIMSL Studio is a Python distribution which includes the IMSL Numerical Libraries.
• Sage is a large mathematical software application which integrates the work of nearly 100 free software projects and supports linear algebra, combinatorics, numerical mathematics, calculus, and more.
• SymPy, a computer algebra system

Additional development packages

• Cheetah, a Python-powered template engine and code-generation tool
• gevent, a coroutine-based networking library for Python
• IPython, a powerful development shell both written in and designed for Python
• Jinja, a Python-powered template engine, inspired by Django's template engine
• mod python, an Apache module allowing direct integration of Python scripts with the Apache web server
• PYthon Remote Objects, a Distributed Object Technology
• PyObjC, a Python to Objective-C bridge that allows writing Mac OS X software in Python
• Sphinx (documentation generator), which converts reStructuredText files into HTML websites and other formats including PDF, EPub and Man pages
• Twisted, a networking framework for Python
• VPython, the Python programming language plus a 3D graphics module called Visual

Embedded as a scripting language

Python is, or can be used as the scripting language in these software products.

• ADvantage Framework
• Amarok
• AMESim
• ArcGIS, a prominent GIS platform, allows extensive modelling using Python
• Autodesk Maya, professional 3D modeler allows Python scripting as an alternative to MEL as of version 8.5
• Autodesk MotionBuilder
• Autodesk Softimage (formerly Softimage|XSI)
• Blender
• Boxee, a cross-platform home theater PC software
• Cinema 4D
• Corel Paint Shop Pro
• DSHub
• EventScripts, plugin for Valve's Source engine
• FreeCAD
• gedit
• GIMP
• GNAT The GNAT programming chain tool (Ada language implementation in GNU gcc), as a GNATcoll reusable components for the applications (with or without PyGTK) and as a scripting language for the commands in the GPS programming environment
• Houdini highly evolved 3D animation package, fully extensible using python
• Inkscape, a free vector graphics editor
• MeVisLab, a medical image processing and visualization software, uses Python for network scripting, macro modules, and application building
• Modo
• MSC.Software's CAE packages: Adams, Mentat, SimXpert
• Notepad++ has a plugin named PythonScript that allows scripting Notepad++ in Python
• Nuke (compositing for visual effects)
• ParaView, an opensource scientific visualization software
• Poser, a 3D rendering and animation software program, that uses for scripting a special dialect of Python, called PoserPython
• PyMOL, a popular molecular viewer that embeds Python for scripting and integration
• QGIS uses Python for scripting and plugin-development
• Rhinoceros 3D version 5.0^{[citation needed]}
• Rhythmbox
• Scribus
• 3DSlicer, medical image visualisation and analysis software. Python is available for algorithm implementation, analysis pipelines, and GUI creation.
• SPSS statistical software SPSS Programmability Extension allows users to extend the SPSS command syntax language with Python
• Totem, a media player for the GNOME desktop environment
• Vim
• VisIt
• WeeChat, a console IRC client

Commercial uses

• CCP hf uses Stackless Python in both its server and client side applications for its MMO Eve Online^[1]
• Google uses Python for many tasks including the backends of web apps such as Google Groups, Gmail, and Google Maps, as well as for some of its search-engine internals^{[citation needed]}
• NASA is using Python to implement a CAD/CAE/PDM repository and model management, integration, and transformation system which will be the core infrastructure for its next-generation collaborative engineering environment^{[citation needed]}
• reddit was originally written in Common Lisp, but was rewritten in Python in 2005^[2]
• Yahoo! Groups uses Python "to maintain its discussion groups"^{[citation needed]}
• YouTube uses Python "to produce maintainable features in record times, with a minimum of developers"^[3]

Python implementations

• CPython - the reference implementation
• Cython is a programming language to simplify writing C and C++ extension modules for the CPython Python runtime.
• IronPython - Python for .NET and Mono platforms
• Jython - Python coded in Java
• Parrot - virtual machine being developed mainly as the runtime for Perl 6, but with the intent to also support dynamic languages like Python, Ruby, Tcl, etc.
• Psyco - not an implementation, but JIT compiler for CPython
• PyPy - Python coded in Python, used in conjunction RPython to make a tracing JIT for Python.
• Stackless Python - Python with coroutines
• Unladen Swallow - the Python implementation from the Google team

References

External links

• Python Package Index (formerly the Python Cheese Shop) is the official directory of Python software libraries and modules
• ActiveState O'Reilly Python Cookbook contains hundreds of code samples for various tasks using Python
• Python Projects and Modules - lots of useful code, as well as several articles on Python Programming
• Python 3D Software Collection - pointers to packages specifically useful in the production of 3D software and/or games with Python
• Useful Modules in the Python.org wiki
• Organizations Using Python - a list of projects that make use of Python
• Ohloh - open source projects in Python
• pydoc.net - open source package library for Python
• Python.org editors - Multi-platform table of various Python editors