| Canorus | Canorus is a free music score editor. It supports note writing, scripting support, import/export of various file formats, MIDI input and output and more! Note that Canorus is still in early stage of development and not nearly all the features are implemented yet! Canorus is free (libre) software, licensed under GNU GPL. This means that the program source code is available to public, anyone is welcome to research how the program works, participate in its development, freely distribute the program and spread the word! Canorus runs on Linux, Windows, MacOSX and others! Read more on About Canorus page. | Linux Windows Mac OSX |
| Celestia | The free space simulation that lets you explore our universe in three dimensions. Unlike most planetarium software, Celestia doesn't confine you to the surface of the Earth. You can travel throughout the solar system, to any of over 100,000 stars, or even beyond the galaxy. | Linux Windows Mac OSX |
| Childsplay | Childsplay is a suite of educational games for young children, like gcompris. Childsplay uses a plugin system for the games, so you might want to check the Childsplay plugins page. (There are two built-in games: memory and a typing game.) | Linux Windows Mac OSX |
| GCompris | GCompris is an educational software suite comprising of numerous activities for children aged 2 to 10. Some of the activities are game orientated, but nonetheless still educational. Below you can find a list of categories with some of the activities available in that category. - computer discovery: keyboard, mouse, different mouse gesture, ... Currently GCompris offers in excess of 100 activities and more are being developed. GCompris is free software, that means that you can adapt it to your own needs, improve it and, most importantly, share it with children everywhere. | Linux Windows |
| jMemorize | jMemorize is a free open-source Java application that manages your learning processes by using flashcards and the famous Leitner system. jMemorize makes memorizing facts not only more efficient but also more fun. It boosts your whole learning experience and features categories, statistics and a visually appealing and intuitive interface. | Linux Windows |
| MuseScore | MuseScore is a free WYSIWYG music score typesetter for Linux, licenced under GNU GPL. Some highlights: * WYSIWYG, notes are entered on a "virtual note sheet" | Linux Windows |
| NoteEdit | NoteEdit is a free music score editor for Linux. It supports an unlimited number and length of staffs, polyphony, a MIDI playback of written notes, chord markings, lyrics, a number of import and export filters to many formats like MIDI, MusicXML, ABC Music, MUP, PMX, MusiXTeX and LilyPond and more! | Linux |
| Stellarium | Stellarium is a free open source planetarium for your computer. It shows a realistic sky in 3D, just like what you see with the naked eye, binoculars or a telescope. | Linux Windows Mac OSX |
| Tuxmath | "Tux, of Math Command" ("TuxMath," for short) is an educational arcade game starring Tux, the Linux mascot! Based on the classic arcade game "Missile Command," Tux must defend his cities. In this case, though, he must do it by solving math problems. | Linux Windows |
| Tuxpainting | Tux Paint: Tux Paint is a free, award winning drawing program for children ages 3 to 12. It combines an easy-to-use interface, fun sound effects, and an encouraging cartoon mascot who helps guide children as they use the program. | Linux Windows Mac OSX |
| Tuxtyping | "Tux Typing" is an educational typing tutor for children. It features several different types of gameplay, at a variety of difficulty levels. | Linux Windows |

