Here is a triumvirate of software titles for this the fourth to last #audiomo entry:
VCV Rack is a fantastic virtual Modular Synthesizer, what’s a modular synthesizer you ask? Well, listen on and you’ll here me describe what it is. You can read more about VCV Rack at https://vcvrack.com/

VirtualBox allows you to run a virtual computer inside your computer, confused, well listen on as I try my best to explain what the heck it is. VirtualBox is available for Windows, Mac and Linux at https://www.virtualbox.org/

VLC Player is a do-all, play all media player. I have yet to find a file that it won’t gobble up and play. You can get VLC Player at https://www.videolan.org/vlc/

Audacity (Audio recording software) – http://www.audacityteam.org
Blender (2D/3D designing and rendering software) – http://www.blender.org
Calibre (e-book management software)- http://calibre-ebook.com
Dia (Diagram editing software) – http://dia-installer.de
Exact Audio Copy – https://www.exactaudiocopy.de/
Fre:ac – http://freac.org
Gimp – http://gimp.org
Handbrake – http://handbrake.fr
Inkscape – http://inkscape.org
Joplin – http://joplinapp.org
Krita – http://krita.org
LibreOffice – http://libreoffice.org
Makehuman – http://makehumancommunity.org
Nightingale – http://getnightingale.com
Openshot – http://www.openshot.org
Pencil – https://pencil.evolus.vn Pencil2D – http://www.pencil2d.org
QCAD – http://qcad.org
Reaper – http://reaper.fm
Scribus – http://scribus.net Stellarium – http://stellarium.org SQLite – http://www.sqlite.org SQLiteStudio – http://sqlitestudio.pl
Tweetduck – https://tweetduck.chylex.com/
Ubuntu – http://www.ubuntu.com
VCV Rack – https://vcvrack.com/ VirtualBox – https://www.virtualbox.org VLC PLayer – https://www.videolan.org/vlc/