GeoSonix Beta Release Available
The beta of GeoSonix version 0.9 for Mac, Windows and Linux is now available for download.
GeoSonix is a free open source graphical music composition environment. With it you create 2D or 3D "scores" that GeoSonix "plays" sending MIDI (or OSC) messages to synths of your choice. GeoSonix was forked in 2011 from open source project IanniX. Since then GeoSonix has added many features taking it in the direction of slightly more "mainstream" music. For example, it includes built in harmony and rhythm processors, it can interpret bitmap images into (often surprising) MIDI tunes, and many others.
GeoSonx works smoothly with a vast range of available MIDI synths and composition environments. It includes many MIDI based example scores and score-generating scripts. There's also a series of online tutorials to get you started.
You will find in GeoSonix an unprecedented set of features for converting graphical scores and images into music.
The best way to understand what GeoSonix can do is to see the video examples on Vimeo here. However, GeoSonix is so open ended and includes so many never-before-available capabilities that these examples can only hint at the musical and video possibilities you may be the first to discover.
GeoSonix is free and open source (GPLv3) and the application is now available for download for Macintosh OS X 10.6 or higher, Windows XP or higher (I'm not sure about Windows 8), and Linux (64 bit). The source code is also available for download from a Mercurial-managed repository on BitBucket here.
For a little more insight into what it's like to use GeoSonix, check out the online tutorials here: http://www.geosonix.com/tutorials/index.html These will continue to be expanded.
GeoSonix is free and open source so you can have it at no cost, even modify it youself it you choose, and if you are a deveoper you could get involved in its continuing advancement.
Be sure to read the included read-me file covering installation and first use.
Note that the documentation included with GeoSonix is not yet fully updated for the features of latest version. However the the tutorial mentioned above is up to date. The tutorial also gives a synopsis of all other available documentation. 
For support, usage questions and to share ideas and music with other GeoSonix users please join the forum (link at the top of this page.)
If you find any issues or omissions please let me know and I'll get onto deaing with them promptly. Preferably, post questions and report issues on the forum. If you need to contact me directly, feel free to do so at chrisgr99 [at] gmail [dot] com.