Freevo: PVR & multimedia "Freevo":http://www.freevo.org is an all-in-one solution for multimedia home servers. Features include: PVR, mp3 player, video game player, etc. Python is used in Freevo as an integration tool for a collection of free software. Twisted: advanced networking "Twisted":http://www.twistedmatrix.com/products/twisted is a framework, written in Python, for writing networked applications. It includes implementations of a number of commonly used network services such as a web server, an IRC chat server, a mail server, a relational database interface and an object broker. Slune: 3D multiplayer arcade game "Slune":http://oomadness.nekeme.net/fr/slune/index.html is a 3D multiplayer arcade game written in python. Slune is based on python gaming libraries "Soya 3D":http://oomadness.nekeme.net/fr/soya/ and "Py2Play":http://oomadness.nekeme.net/fr/py2play/index.html . Other python game libraries include "pygame":http://www.pygame.org/ with a nice tutorial "here":http://www.linuxjournal.com//article.php?sid=7694 . Skencil: 2D illustration "Skencil":http://sketch.sourceforge.net/ (formerly Sketch) is a powerful 2D illustration software written in python. Skencil is very reliable and usable to produce postcript and EPS illustration files. It includes on open scripting API. BitTorrent: peer to peer "BitTorrent":http://bitconjurer.org/BitTorrent/ is a peer to peer technology which allows to distribute software to a large number of users. BitTorrent provides limitless scalability for a fixed cost. BitTorrent reference implementation is written in python. Zope: application server and object database "Zope":http://www.zope.org is a powerful application server written mostly in python. Zope provides services such as: object persistence, transactions, database integration, page templates, workflow. ERP5: entreprise resource planning "ERP5":http://www.erp5.org is a high end ERP/CRM software based on Zope. ERP5 includes modules for production management, inventory, invoicing, product design, accounting, e-commerce. It is used in industry with database of 1,000,000+ inventory movements. ERP5 is integrated with CPS. CPS: document management "CPS":http://www.cps-project.org is a high end Content Management System based on Zope. CPS provides versioning, multi-lingual support, central repository, collaboration workspaces and publication sections. CPS is integrated with ERP5. PyQt & PyKDE: multi-platform GUI development in python "PyQt":http://www.riverbankcomputing.co.uk/pyqt/index.php and "PyKDE":http://www.riverbankcomputing.co.uk/pykde/index.php turn python into a great language for multi-platform GUI development. Software written with PyQt can be deployed on systems such as PDA (SharpZaurus), Macintosh (MacOS X), GNU/Linux systems, Windows. PyQt includes a complete development environment (eric) as well as a generic C++ bindings framework, "SIP":http://www.riverbankcomputing.co.uk/sip/index.php . RPM packages can be downloaded from "sourceforge":http://sourceforge.net/project/showfiles.php?group_id=61057 . Incidentally, PyQt includes an educational version of Qt for Windows (Qt is free software on all platforms except Windows). Psyco: native i386 speed with python "Psyco":http://psyco.sourceforge.net/ is a Python extension module which can massively speed up the execution of any Python code. It provides near native performance to python code on i386 architectures Reportlab: fast PDF generation "Reportlab":http://www.reportlab.org is a python library which provides one of the fastest PDF report generation enginer available currently. Great documentation is available "here":http://www.reportlab.org/rsrc/userguide.pdf Others More examples of python software can be found in the following sites: