"GNU Solfege: Tactile Training" offers a cost-free method of developing musical perception through ear training.
One great feature of this program is that it’s portable, meaning it can work across multiple operating systems. Versions of Solfege have successfully run on Debian, Redhat, Mandrake, SuSE, FreeBSD 4.2, MS Windows 95/98/2000/XP and MacOSX. It’s also possible to make the program run on other Unix-like systems (such as Solaris or BeOS) as long as you have gtk+, python, and pygtk installed.
However, it should be noted that the old MacOS is not compatible with this software, as gtk+ and pygtk have not been ported to that OS.
Another great aspect of GNU Solfege is that it’s completely free to use, as it’s part of the larger GNU Project. So, if you’re passionate about music and want to improve your ear training, definitely give this program a try!
Version 3.14.9 / 3.15.1: N/A