macOS
Recommended applications
MonitorControl
Controls your external display brightness and volume and shows native OSD. Use menubar extra sliders or the keyboard, including native Apple keys!
https://github.com/MonitorControl/MonitorControl
Maccy
Maccy is a lightweight clipboard manager for macOS. It keeps the history of what you copy and lets you quickly navigate, search, and use previous clipboard contents.
https://github.com/p0deje/Maccy
Magnet
Every time you multitask with many apps open, you need all the windows arranged accordingly. Magnet makes this process swift and effortless.
Amphetamine
Amphetamine can keep your Mac, and optionally its display(s), awake through a super simple on/off switch, or automatically through easy-to-configure Triggers.
https://apps.apple.com/us/app/amphetamine/id937984704?mt=12
iTerm2
iTerm2 is a replacement for Terminal and the successor to iTerm. It works on Macs with macOS 10.14 or newer. iTerm2 brings the terminal into the modern age with features you never knew you always wanted.
General tips & tricks
Tutorials
https://www.youtube.com/@macmost
Default application per file type
To change the default application for a file type, select a file of the respective type with a right-click and choose 'Get Info'.
Next, click 'Open with,' select the respective application, and click 'Change All.'
Keyboard shortcuts
https://support.apple.com/en-us/HT201236
Navigation
https://support.apple.com/en-us/HT204100
https://support.apple.com/nl-nl/guide/mac-help/mh35869/13.0/mac/13.0
https://support.apple.com/nl-nl/guide/mac-help/mchlp2469/mac
https://support.apple.com/nl-nl/guide/mac-help/mchl534ba392/13.0/mac/13.0
Screenshots & screen recording
https://support.apple.com/en-us/HT201361
https://support.apple.com/en-us/HT208721
How to take a screenshot on your Mac
How to capture a portion of the screen
How to capture a window or menu
Use the Screenshot toolbar
Here you can also change the storage location of your screenshots from ~/Desktop to another folder.
Spotlight
https://support.apple.com/en-gb/guide/mac-help/mchlp1008/mac
Central search function of the Mac, essentially you can find everything in it, from applications to notes and from files to contacts.
Quick look
https://en.wikipedia.org/wiki/Quick_Look
https://www.iculture.nl/tips/quicklook-safari-mac/
Quick View function on your Mac, works in every standard Mac application. It allows you to quickly preview a file using the spacebar. This works, for example, in Finder (file manager), email attachments, etc.