Ferkis
Blurs every window except the one you're using
Download for macOSAvailable on macOS only.
Open this page on your Mac to download.
Shake to toggle
Wiggle your cursor back and forth. That's it. Blur on, blur off.
Your window stays sharp
The window you're working in sits above the blur. Switch apps and it follows.
Tint, grain, mono
Add a color wash, film grain, or go full grayscale. Make it yours.