Veil for Mac
Veil is a menu-bar app that blurs background windows while one app stays clear. Use Frontmost Window mode to follow focus, or Cover App to lock clarity on a slide deck or IDE during an entire-screen share. You toggle Veil on manually before Zoom, Teams, Meet, or a recording—it does not watch for meetings.
Hush (Poteam)
Hush blurs desktop clutter and background apps during screen sharing. Focus Mode keeps the active window or hand-picked apps visible while other windows blur. Desktop Mode covers wallpaper, icons, and widgets. Hush can activate from the menu bar, a hotkey, or—if you enable it—when macOS screen sharing starts.