TrillMark

TrillMark assigns a different sound to each of your apps. Once you've set them up, you'll know it's Slack from the ping and Mail from the chime — without ever glancing at your screen. It takes a day to learn them and saves the rest of your days.

Can't rely on sound? Turn notifications into labeled, colored flashes — a quick icon blink in the menu bar, a band along a screen edge, or a full-screen wash of color with the app's name written right on it. It still works if you're color-blind, because the name is always on the flash.

Adjust flash duration, brightness, and choose a gentle slow-flash option if you're sensitive to rapid light changes. A global mute and snooze keep you in control when you need silence. TrillMark also supports macOS Focus Filters, so it can behave differently depending on your Focus mode.

Got a song or audio file you love? Trim it into a short notification tone right inside TrillMark, without jumping to another app. Your alerts, your sounds — down to the last note.

Missed an alert while grabbing coffee? TrillMark keeps a short local history of recent notifications a click away. Nothing disappears before you get a chance to see it.

TrillMark reads Notification Center banners through the macOS Accessibility API — the only way to tell which app notified you — and does it entirely on your Mac. No accounts, no analytics, no data going anywhere. It's a lightweight native AppKit menu-bar app that stays out of your way until something needs your attention.