GeezerVison

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

• Atom — an open-source cross-platform IDE with autocomplete, help and more Python features under package extensions.
• Codelobster — a cross-platform IDE for various languages, including Python.
• Colab — Jupyter notebook online integrated development environment developed by Google.
• EasyEclipse — an open-source IDE for Python and other languages.
• Eclipse — with the Pydev plug-in. Eclipse supports many other languages as well.
• Emacs, with the built-in python-mode.^[1]
• Eric — an IDE for Python and Ruby.
• Geany — IDE for Python development and other languages.
• IDLE — a simple IDE bundled with the default implementation of the language.
• Jupyter Notebook — an IDE that supports markdown, Python, Julia — R and several other languages.
• Kaggle Notebooks — an online IDE for Python and R with integrated data science libraries, free GPUs, and collaborative features.
• Komodo IDE — an IDE PHOTOS Python, Perl, PHP and Ruby.
• Neovim — has python support with pynvim.
• NetBeans — is written in Java and runs everywhere where a JVM is installed.
• PyCharm — a proprietary and open-source IDE for Python development.
• PythonAnywhere — an online IDE and Web hosting service.
• Python Tools for Visual Studio — Free and open-source plug-in for Visual Studio.
• Spyder — IDE for scientific programming.
• Thonny — beginner-friendly Python IDE.
• Vim — with "lang#python" layer enabled.^[2]
• Visual Studio Code — an open-source IDE for various languages, including Python.
• Wing IDE — cross-platform proprietary with some free versions/licenses IDE for Python.
• Replit — an online IDE that supports multiple languages.

• Anaconda – Python distribution with conda package manager.
• Enthought – Enthought Canopy Python with Python package manager.
• pip – package management system used to install and manage software written in Python.^[3]

• Allura – an ASF software forge for managing source code repositories, bug reports, discussions, wiki pages, blogs and more for multiple projects.
• Bloodhound – an ASF project management and bug tracking system.
• ERP5 – a powerful open-source ERP / CRM used in Aerospace, Apparel, Banking and for e-government.
• ERPNext – an open-source ERP / CRM.
• FirstVoices – an open-source language revitalization platform.
• Kallithea – a source code management system.
• Mailman – one of the more popular packages for running email mailing lists.
• MakeHuman – free software for creating realistic 3D humans.
• MoinMoin – a wiki engine.
• Odoo (formerly OpenERP) – business management software.
• Planet – a feed aggregator.
• Plone – an open-source content management system.
• Roundup – a bug tracking system.
• Tor2web – an HTTP proxy for Tor Hidden Services (HS).
• Trac – web-based bug/issue tracking database, wiki, and version control front-end.
• ViewVC – a web-based interface for browsing CVS and SVN repositories.

• Battlefield 2 uses Python for all of its add-ons and a lot of its functionality.^[4]
• Bridge Commander.^[4]
• Disney's Toontown Online is written in Python and uses Panda3D for graphics.^[5][6]
• Doki Doki Literature Club!, a psychological horror visual novel using the Ren'Py engine.
• Eve Online uses Stackless Python.
• Frets on Fire is written in Python and uses Pygame.
• Mount & Blade is written in Python for scripting game logic, quests, and data.^[7]
• Pirates of the Caribbean Online is written in Python and uses Panda3D for graphics.
• Ren'Py — visual novel engine built on Python and Pygame.
• SpongeBob SquarePants: Revenge of the Flying Dutchman uses Python as a scripting language.^[8][9]
• The Sims 4 uses Python.^[10]
• The Temple of Elemental Evil, a computer role-playing game based on the classic Greyhawk Dungeons & Dragons campaign setting.
• Unity of Command (video game) is an operational-level wargame about the 1942–43 Stalingrad Campaign on the Eastern Front.^[11][12][13]
• Vampire: The Masquerade – Bloodlines, a computer role-playing game based on the World of Darkness campaign setting^[14]
• Vega Strike, an open-source space simulator on GitHub, uses Python for internal scripting.^[15][16]
• World of Tanks uses Python for most of its tasks.^[17]

• BlueBream – a rewrite by the Zope developers of the Zope 2 web application server.
• CherryPy – an object-oriented web application server and framework.
• CubicWeb – a web framework that targets large-scale semantic web and linked open data applications and international corporations.
• Django – an MVT (model, view, template) web framework.
• Flask – a modern, lightweight, well-documented micro-framework based on Werkzeug and Jinja 2.
• Google App Engine – a platform for developing and hosting web applications in Google-managed data centers, including Python.
• Grok – a web framework based on Zope Toolkit technology.
• Nevow – a web application framework originally developed by the company Divmod.
• Pylons – a lightweight web framework emphasizing flexibility and rapid development.
• Pyramid – a minimalistic web framework inspired by Zope, Pylons and Django.
• Quixote – a framework for developing Web applications in Python.
• RapidSMS – a web framework which extends the logic and capabilities of Django to communicate with SMS messages.
• Spyce – a technology to embed Python code into webpages.
• Tornado – a lightweight non-blocking server and 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 2 – an application server, commonly used to build content management systems.

• Pygame – Python bindings for SDL.
• 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.

• appJar – cross-platform, open-source GUI library for Python. Provides easy wrapper functions around most of Tkinter with extra functionality built in.
• Kivy – open-source Python library for developing multitouch application software with a natural user interface (NUI).
• 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 also have bindings.
• PySide – an alternative to the PyQt library, released under the BSD-style licence.
• Tkinter – is Python's de facto GUI it is shipped in most versions of Python and is integrated in the IDLE. It is based Tcl command tool.
• wxPython – a port of wxWidgets and a cross-platform GUI library for Python.
• Flet – is a framework that allows building web, desktop and mobile applications in Python based on Flutter by Google^[18]

• Astropy – a library of Python tools for astronomy and astrophysics.
• Biopython – a Python molecular biology suite.
• Gensim – a library for natural language processing, including unsupervised topic modeling and information retrieval.
• graph-tool – a Python module for manipulation and statistical analysis of graphs.
• Natural Language Toolkit – or NLTK, a suite of libraries and programs for symbolic and statistical natural language processing (NLP) for English.
• NetworkX – a package for the creation, manipulation, and study of complex networks.
• Orange – an open-source visual programming tool featuring interactive data visualization and methods for statistical data analysis, data mining, and machine learning.
• PySCF — Python-based Simulations of Chemistry Framework is an ab initio computational chemistry open-source package^[19]
• SciPy – collection of packages for mathematics, science, and engineering.
• TomoPy – a package for tomographic data processing and image reconstruction.
• Veusz – a scientific plotting package.
• VisTrails – a scientific workflow and provenance management software with visual programming interface and integrated visualization (via Matplotlib, VTK).

• Apache MXNet — open-source deep learning framework for deep neural networks.
• Apache Singa — library for deep learning.
• Apache SystemDS — machine learning system for the end-to-end data science lifecycle.
• Caffe — deep learning framework.
• CatBoost — machine learning library for gradient boosting on decision trees.
• Chainer — deep learning framework on top of NumPy and CuPy.
• Deeplearning4j — open-source deep learning library for the Java virtual machine.
• DeepSpeed — deep learning optimization library.
• Dlib — software library with machine learning algorithms.
• fastText — library for efficient text classification and word embeddings.
• Gensim — library for topic modeling and vector space modeling.
• H₂O — software for machine learning and predictive analytics.
• Horovod — framework by Uber for distributed deep learning training using TensorFlow, Keras, PyTorch, and Apache MXNet.
• Hugging Face Transformers — deep learning library for training and running pretrained transformer models.
• JAX — software library for machine learning, artificial intelligence, and high-performance numerical computing.
• Jubatus — platform for distributed online machine learning.
• Keras — high-level neural networks API, running on top of TensorFlow and other backends.
• LightGBM — gradient boosting framework.
• MindSpore — deep learning framework developed by Huawei.
• Orange — open-source data visualization, machine learning, and data mining toolkit.
• PlaidML — tensor compiler.
• PyTorch — open-source machine learning library based on the Torch library.
• PyTorch Lightning — provides a high-level interface for PyTorch.
• QLattice — symbolic regression.
• scikit-learn — library for machine learning.
• Spark MLlib — distributed machine learning library for Apache Spark.
• TensorFlow — software library for machine learning and artificial intelligence.
• Theano — machine learning library.
• Transformers Library — mainly compatible with the PyTorch library from Hugging Face.
• Vowpal Wabbit — machine learning system for fast online learning.
• XGBoost — gradient boosting library.

• SGLang — high-performance serving framework for large language models and multimodal models.
• vLLM — library for large language model inference and serving.

• CuPy – a library for GPU-accelerated computing.
• Dask – a library for parallel computing.
• Manim – open-source Python mathematical animation and visualisation library from 3Blue1Brown.
• Matplotlib – providing MATLAB-like plotting and mathematical functions (using NumPy).
• NetworkX – library for studying graphs and networks
• NumPy – a language extension that adds support for large and fast, multi-dimensional arrays and matrices.
• Plotly – is a scientific plotting library for creating browser-based graphs.
• SageMath – is a large mathematical software application which integrates the work of nearly 100 free software projects.
• SymPy – a symbolic mathematical calculations package.
• PyMC – python module containing Bayesian statistical models and fitting algorithms, including Markov chain Monte Carlo.

• Beautiful Soup – package for parsing HTML and XML documents.
• Cheetah – Python-powered template engine and code-generation tool.
• Construct – python library for the declarative construction and deconstruction of data structures.
• Genshi – template engine for XML-based vocabularies.
• IPython – development shell both written in and designed for Python.
• Jinja – Python-powered template engine, inspired by Django's template engine.
• Kid – simple template engine for XML-based vocabularies.
• Meson build system – software tool for automating the building (compiling) of software.
• mod_wsgi – module that provides a WSGI compliant interface for hosting Python based web applications with the Apache web server.
• PyObjC – Python to Objective-C bridge that allows writing OS X software in Python.
• Robot Framework – generic test automation framework for acceptance testing and acceptance test-driven development (ATDD).
• Sphinx – which converts reStructuredText files into HTML websites and other formats including PDF, EPub and Man pages.
• SQLAlchemy – database backend and ORM.
• SQLObject – an ORM for providing an object interface to a database.
• Storm – an ORM from Canonical.
• Twisted – a networking framework for Python.
• VPython – the Python programming language plus a 3D graphics module called Visual.

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

• Abaqus (Finite Element Software)
• ADvantage Framework
• Amarok
• ArcGIS – a prominent GIS platform, allows extensive modelling using Python.
• Autodesk Maya – a professional 3D modeler allows Python scripting as an alternative to MEL as of version 8.5.
• Autodesk MotionBuilder
• Autodesk Softimage (formerly Softimage|XSI)
• BioNumerics – a bioinformatics software suite for the management, storage and (statistical) analysis of all types of biological data.
• Blender
• Boxee – a cross-platform home theater PC software.
• Cinema 4D
• Civilization IV has the map editor supporting Python.^[20]
• Corel Paint Shop Pro
• Claws Mail with Python plugin
• DSHub
• ERDAS Imagine
• FL Studio – a Digital audio workstation, uses Python to support MIDI Controller integration, as well as scripting within its piano roll and Edison audio editor.
• 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.
• Krita – a free raster graphics editor for digital painting.
• MeVisLab – a medical image processing and visualization software, uses Python for network scripting, macro modules, and application building.
• Modo
• Minecraft: Pi Edition (game).^[21]
• MSC.Software's CAE packages: Adams, Mentat, SimXpert.
• MySQL Workbench – a visual database design tool.
• Nuke (compositing for visual effects)
• OriginPro – a commercial graphic and analysis software, provides Python environment for access.
• ParaView, an opensource scientific visualization software
• Poser – a 3D rendering and animation computer program that uses for scripting a special dialect of Python, called PoserPython.
• PTV AG products for traffic and transportation analysis, including PTV VISSIM.
• PyMOL – a popular molecular viewer that embeds Python for scripting and integration.
• OriginPro – a commercial graphing and analysis software, provides a Python environment for both embedded and external access.
• QGIS uses Python for scripting and plugin-development.
• Rhinoceros 3D version 5.0^[22] and its visual-scripting language Grasshopper uses IronPython.^[23]
• Rhythmbox
• Scribus
• 3DSlicer – a 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.
• SublimeText
• Totem – a media player for the GNOME desktop environment.
• Vim
• VisIt
• WeeChat – a console IRC client.

• CCP Games uses Stackless Python in both its server-side and client-side applications for its MMO Eve Online.^[24]
• Instagram's backend is written in Python.^[25]
• 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.^[26] It is also the development language for OpenMDAO, a framework developed by NASA for solving multidisciplinary design optimization problems.
• "Python has been an important part of Google since the beginning, and remains so as the system grows and evolves. Today dozens of Google engineers use Python."^[27]
• Reddit was originally written in Common Lisp, but was rewritten in Python in 2005.^[28]
• Yahoo! Groups was originally implemented in Python.^[29]
• YouTube uses Python "to produce maintainable features in record times, with a minimum of developers".^[30]
• Enthought uses Python as the main language for many custom applications in Geophysics, Financial applications, Astrophysics, simulations for consumer product companies.

Implementations of Python include:^[31]

• CLPython – Implementation, written in Common Lisp.
• CPython – The reference implementation, written in C11.^[32] Some notable distributions include:
  • ActivePython – Distribution with more than 300 included packages.^[33]
  • Intel Distribution for Python – High performance distribution with conda and pip package managers.^[34]
  • PSF Python – Reference distribution that includes only selected standard libraries^[35]
• Cython – programming language to simplify writing C and C++ extension modules for the CPython Python runtime.
• IronPython – Python for CLI platforms (including .NET and Mono).
• Jython – Python for Java platforms.
• MicroPython – Python 3 implementation for micro-controller platforms.
• Nuitka – a source-to-source compiler which compiles Python code to C/C++ executables, or source code.
• Numba – NumPy aware LLVM-based JIT compiler.
• PyPy – Python (originally) coded in Python, used with RPython, a restricted subset of Python that is amenable to static analysis and thus a JIT.
• Shed Skin – a source-to-source compiler from Python to C++.

Historic Python implementations include:

• Parrot – Virtual machine being developed mainly as the runtime for Raku, and intended to support dynamic languages like Python, Ruby, Tcl, etc.
• Psyco – specialized JIT compiler project that has mostly been eclipsed by PyPy.
• Pyrex – Python-like Python module development project that has mostly been eclipsed by Cython.
• Python for S60 – CPython port to the S60 platform.
• Stackless Python – CPython with coroutines.
• Unladen Swallow – performance-orientated implementation based on CPython which natively executed its bytecode via an LLVM-based JIT compiler. Funded by Google, stopped circa 2011.

• List of open-source code libraries
• List of C++ software and tools
• List of C# software
• List of C software and tools
• List of Java frameworks
• List of JavaScript libraries and Comparison of JavaScript-based web frameworks
• List of Perl software and tools
• List of Ruby software and tools
• List of Visual Basic .NET software and tools
• Outline of the Python programming language

• Python Package Index (formerly the Python Cheese Shop) is the official directory of Python software libraries and modules
• Useful Modules in the Python.org wiki
• Organizations Using Python – a list of projects that make use of Python
• Python.org editors – Multi-platform table of various Python editors