Muzzle vs ScreenVeil: notifications vs. everything else

If you've ever searched for "stop notifications while screen sharing on Mac," you've met Muzzle. It's a lovely, free little app that flips on Do Not Disturb the instant it detects a screen share. It does one job well. The question is whether that one job is the whole job.

What Muzzle covers

• Notification banners — Messages, Slack, Mail, calendar pop-ups. Silenced automatically.
• Zero setup, zero cost, auto-detects the share. Genuinely great at this.

What it doesn't cover

Notifications are only one of the four ways your screen leaks. Muzzle does nothing about the Slack sidebar full of channel names, the DM thread already open, the inbox behind your deck, or the browser tab titled with another client's name. Those are visible content, not pop-ups — and they're where the embarrassing screenshots come from.

What ScreenVeil adds

ScreenVeil hides whole apps and windows from the shared feed — surgically, so you keep presenting your actual work while Slack, Messages, or the wrong tab are simply not in the picture. You keep using them; the audience never sees them. Muzzle mutes the ping; ScreenVeil hides the whole conversation.

The honest recommendation

If your only worry is notification banners, Muzzle is free and perfect — use it. If you present on live tools with private apps open next to your work (sales demos, client calls, telehealth, teaching), you need content-level hiding, which is what ScreenVeil is for. Plenty of people run both: Muzzle for the pings, ScreenVeil for everything else.