"Free Educational Software
We find and review high-quality free learning software and websites - mostly for kids, but also for grown-ups".
Most of the software is for PC but the sites work. Worth a look, choose a category at the top
Students of all ages can quickly produce meaningful animations that represent their learning, using free software. Developed at the University of Wollongong.
Canorus is a free extensible music score editor. It supports note writing, import/export of various file formats, MIDI input and output, scripting and more! Using a Qt4 framework Canorus offers a fast and modern GUI and cross-platformability. Canorus runs on Linux, Windows and MacOSX. Canorus is free (libre) software, licensed under GNU GPL.
"Free and Open Source Text to Speech Tools for e-Learning
Open source software can be used as we wish, without long-term commitments and with a community of professionals that extend and support them. This post is a post of the series "Free e-Learning Resources" and I am going to talk about free and open source text-to-speech tools for e-Learning.
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"Welcome to Celestia
... The free space simulation that lets you explore our universe in three dimensions. Celestia runs on Windows, Linux, and Mac OS X.
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. "
Celestia is great - and it works in tandem with Stellarium - some more freeware - we started our students off with an examination of the Earth (Stellarium) and how it relates to the Solar System and then you can move on to Celestia - a chance to explore further out into space
http://www.stellarium.org/ check this out - we have both Stellarium and Celestia on the student image - "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." both freeware