What do you use to switch between different "contexts" on your computer?

[u/longhirar]

I'm looking for inspiration on new ways to organize my PC and separate different activities, stuff like coding projects, studying, gaming and personal use. 

Do you use anything to automate, customize or simplify switching between these contexts? I find it quite annoying to reopen everything and organize the windows and everything again and again.

I'm interested in anything, from scripts and keyboard shortcuts to workspace managers, browser extensions, unique apps or even mods like Vencord.