TripMode - Manage your Mac's broadband usage while on a hotspot

Radio Silence - Radio Silence is a network monitor and firewall for the macOS. The software stops apps from making network connections. The firewall runs in the background and does not require an open window.

Little Snitch - Little Snitch is a firewall application that monitors and controls outbound internet traffic.

Time Zone Pro - A beautiful world clock for friends, family, clients and more

NetGuard - NetGuard

FaceAlarm - Your newest personal alarm clock