These are links to some useful programmes.
I think these are all legit - but check for yourself


best programme for searching for files and content
Agent Ransack https://www.mythicsoft.com/agentransack/

Bulk renaming files and directories - careful when you use it
https://www.bulkrenameutility.co.uk/Screenshots.php

TreesizeFree - sort hard drive by name and sizes
https://www.jam-software.com/treesize_free/

Video player - play everything VLC
https://www.videolan.org/vlc/download-windows.html

Photo-shop like image editor with tons of plug-ins
GIMP
https://www.gimp.org/

Flexible Editor with plug-ins available for lots and obscure file formats
Notepad++
https://notepad-plus-plus.org/

Audio editor, recorder, conversions
Audacity
https://www.audacityteam.org/download/

Transcode Video between various formats
Handbrake
https://handbrake.fr/

Engineering type tool for dealing with video.
Again - a lot of free filter for video maniplulation
virtualdub
http://www.virtualdub.org/download.html

Dealing with zip and rar files
https://www.win-rar.com/download.html?&L=0


ARTA - turn your PC/w MIC into and audio spectrum analyzer
http://www.artalabs.hr/