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.
All movement in Celestia is seamless; the exponential zoom feature lets you explore space across a huge range of scales, from galaxy clusters down to spacecraft only a few meters across. A 'point-and-goto' interface makes it simple to navigate through the universe to the object you want to visit.
Celestia is expandable. Celestia comes with a large catalog of stars, galaxies, planets, moons, asteroids, comets, and spacecraft. If that's not enough, you can download dozens of easy to install add-ons with more objects.

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, ...
- algebra: table memory, enumeration, double entry table, mirror image, ...
- science: the canal lock, the water cycle, the submarine, electric simulation ...
- geography: place the country on the map
- games: chess, memory, connect 4, oware, sudoku ...
- reading: reading practice
- other: learn to tell time, puzzle of famous paintings, vector drawing, cartoon making, ...

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
Little Wizard

Little Wizard is a development environment for children. It is intended to be used by primary school children to learn about the main elements of real computer languages. Using only the mouse, children can explore programming concepts such as variables, expressions, loops, conditions, and logical blocks. Every element of the language is represented by an intuitive icon, making it easy to learn. Little Wizard works under Linux and Windows 2000/XP.

Linux
Windows
Mac OSX
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"
* unlimited number of staves
* up to four voices/staff
* easy and fast note entry with mouse, keyboard or midi
* integrated sequencer and FluidSynth software synthesizer
* import and export of MusicXml and standard midifiles (SMF)
* platform independent code for Linux, Windows and Mac
* GNU GPL licenced

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.
It is being used in planetarium projectors. Just set your coordinates and go.

Linux
Windows
Mac OSX
Sugar

Sugar reinvents how computers can be used for education. Sugar promotes sharing, collaborative learning, and reflection. Through Sugar's clarity of design, children and their teachers have the opportunity to use computation on their own terms; they are free to reshape, reinvent, and reapply both software and content into powerful learning activities. Sugar is a community project; it is based on GNU/Linux, a free and open-source operating system.

Linux
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