SNMP Taskbar

SNMP Taskbar puts the current upload and download rate of a network interface in the macOS menu bar, in fixed-width digits so the numbers stop shuffling sideways every time they change.

It polls devices over SNMP, v2c or v3, and will watch any number of routers, switches, and firewalls at once. Choose the interfaces that matter, name them, give them icons, and put them in whatever order you think about them in. Direction can be inverted per interface, which becomes necessary the moment you are looking at a link from the far end.

Hovering the menu bar item opens a fifteen-minute history drawn as a Catmull-Rom spline. The detail window adds current, peak, average, and total transferred. Smoothing runs from one to sixty seconds, units can be Kbps, Mbps, Gbps, or MB/s, and the history scale can be linear or logarithmic — the latter being the difference between a readable graph and a flat line with occasional spikes on a link that is mostly idle.

Optional per-interface thresholds post an ordinary macOS notification when a link crosses them.

Configuration stays on the Mac. There is no account, no cloud service, no analytics, and no advertising; the only traffic the app generates goes to the devices it was asked to poll.

Its sibling, DNS Taskbar, does the same thing for resolver latency.