Intacept is currently unavailable on the App Store until some long overdue bugs have been squashed. Follow @intaceptapp on Twitter for updates.
Intacept screenshot

Intacept — a Pushover client for macOS

It sits discreetly in your tray, but with a click can reveal the messages sent to your registered Pushover device.

Available for macOS 10.9.0 or Later • Privacy Policy