Apps That Do One Thing Well
One thing that happens to some apps over time is bloating through
feature creep. Customers demand constant updates to justify
subscriptions or to satisfy some imaginary metric in their heads thats
their apps aren’t abandoned and the next thing you know, your favorite
notes app has AI and your calendar apps can order you an Uber and it
just all gets out of hand. That’s why I like apps that do one thing well
and that’s it. I have a few favorites.
Mission Control Plus

Mission Control Plus
adds the ability to close and minimize apps and windows from the Mission
Control Screen. That's it and that's enough. When you have to many apps
open and your workspace is getting cluttered, just invoke Mission
Control with a hot corner or F3 and start clicking some X buttons.
QuitAll

QuitAll labels itself as a
fresh start without a restart. While it's possible to quit all open apps
with an AppleScript or a Keyboard Maestro macro, QuitAll lets you toggle
between quitting and force quitting your open apps. Quit one, some, or
all apps from one tidy spot. Apps will prompt you to save any unsaved
work before they close. You can even adjust your settings to quit
background apps if you want to.
One Thing

One Thing by Indy App
developer Sindre Sorhus lets you put a single task or goal in your menu
bar. Based on the principal that "You can achieve almost anything in
life — as long as you focus on achieving one thing at a time. It’s a
time-tested strategy that’s been shared by many successful people."