Freeware
There is so much music & audio freeware that making a comprehensive list would be impossible. Every so often a piece of software takes my fancy, and I put the link on this page.
Notation Software
http://musescore.org/
Swiss Army Knife
http://audacity.sourceforge.net/
DAW
http://www.mutools.com/mulab-downloads.html
TAL VIs
https://tal-software.com/Products
MIDI player
http://www.fracturedsoftware.com/rondo/
Audio Editor (to rival Audacity)
http://www.ocenaudio.com.br
http://musescore.org/
Swiss Army Knife
http://audacity.sourceforge.net/
DAW
http://www.mutools.com/mulab-downloads.html
TAL VIs
https://tal-software.com/Products
MIDI player
http://www.fracturedsoftware.com/rondo/
Audio Editor (to rival Audacity)
http://www.ocenaudio.com.br