Open Source desktop project management

A free multi-track audio editor and recorder

A planetarium software that shows a 3D simulation of the night sky

A free and reliable P2P BitTorrent client

An award-winning drawing program for children ages 3 to 12

Audio converter and CD ripper for various formats

Project Management software: alternative to Microsoft Project

Panorama photo stitcher

A graphical network simulator to design and configure virtual networks

Open source erp and crm web software for business

Run Windows applications on Linux, BSD, Solaris, and Mac OS X

Psi IM — Qt-based XMPP/Jabber client

gPhoto is a program and library framework that lets users download pictures from their digital cameras. The libgphoto2 library gives you access to hundreds of models of digital cameras on several platforms. GIT repo and Issue tracker lives at https://github.com/gphoto/ these days.

A free sing-along karaoke game for your PC

A very high quality package of printer drivers for Ghostscript and CUPS on Linux, Macintosh OS X, and other POSIX-compliant operating systems. This project also maintains an enhanced Print plug-in for GIMP 2.x from the same code base.

World's #1 Open Source ERP

AWStats is a free powerful and featureful server logfile analyzer that shows you all your Web/Mail/FTP statistics including visits, unique visitors, pages, hits, rush hours, os, browsers, search engines, keywords, robots visits, broken links and more

Synfig is a powerful, industrial-strength vector-based 2D animation software package, designed from the ground-up for producing feature-film quality 2D animation with fewer people and resources.

Provides optical character recognition (OCR) solutions for Vietnamese language.

Synkron is a simple Qt application that allows you to sync folders, for example a flash disk with a folder on your hard disk.

Free music notation & composition software

FET is free timetabling software for schools, high-schools and universities. Scheduling is done automatically. Please visit the project web site http://lalescu.ro/liviu/fet/ to be sure you always have the latest version

KMyMoney is the Personal Finance Manager for KDE. It operates similar to Quicken, supports various account types, categorization of expenses, multiple currencies, online banking support via QIF, OFX and HBCI, budgeting and a rich set of reports.

Bluefish is a powerful editor for experienced web designers and programmers. Bluefish supports many programming and markup languages, but it focuses on editing dynamic and interactive websites.

"Tux, of Math Command" is a math drill game starring Tux, the Linux Penguin. Lessons are included from simple number typing through addition, subtraction, multiplication, and division of positive and negative numbers. It is intended for kids ~4-10.