Agreed, though I combine using Little Snitch with Radio Silence: https://radiosilenceapp.com Little Snitch is great for when I want hyper granular control of a specific app's network permissions while Radio Silence gives me a super quick way to just block EVERYTHING for a particular app right away without even opening it the first time. - Source: Hacker News / 12 months ago

I'm using radio silence for years and it is awesome :) https://radiosilenceapp.com. - Source: Hacker News / about 1 year ago

Forgot to mention Radio Silence (commercial), seen by many as an easier introduction vs Little Snitch. Source: over 1 year ago

Sorry for the late reply. I use Lulu which should be enough, but I also simultaneously use Radio Silence to be safe. Source: almost 2 years ago

Little Snitch (LS) is considered by many to be the gold standard. The aforementioned Lulu has a good reputation. The app Hands Off! Appears to be no longer developed (site offline). Then there's Radio Silence that may well fit your needs. Finally, one or more apps by Murus may be of interest but AFAIK these are not easy to configure and may be overkill for the average Mac user. I'm not familiar with TripMode. Source: over 2 years ago

I used Vanilla for the longest time for my top menu bar icons, but once I got a MacBook Pro with the notch, it just didn't work well. I've since moved on to Bartender for managing my menu bar. - Source: dev.to / about 1 month ago

If I’m recording a full screen capture for videos, I like to hide the app icons at the top of the screen. I use Vanilla for this. - Source: dev.to / 6 months ago

Vanilla. But here you are sure to find more of your liking. Source: over 1 year ago

I use (and quite like) Vanilla. https://matthewpalmer.net/vanilla/. Source: almost 2 years ago

This is a more general solution. But I really like this one to get control over what I want to hide https://matthewpalmer.net/vanilla/. Source: about 2 years ago