Below are some apps that we think you will find useful in your work.
Audacity: A Digital Audio Workstation (DAW). Audio file editor
Chrome: Web Browser
Handbrake: Video files convertor. Useful for downloading DVD's
iMovie: Video Editor
NWEA Lockdown Browser: Secure Test Administration Browser
Quicktime: A audio / video / screen recorder
Splashtop: Remote IT Support
VLC: VIdeo Player
Zoom: Video and Web Conferencing tool