CPU 22%  RAM 78%

macOS menu-bar monitor

Catch the app
slowing your Mac.

Bubo sits in your menu bar and names the process eating your CPU and memory, then quits it in one click. Native Apple Silicon, no daemon, no sudo, 280 KB.

$ brew install fajarhide/tap/bubo
Download .dmg macOS 13+ · Apple Silicon · MIT

the difference

Activity Monitor makes you go looking.
Bubo just tells you.

A slow Mac is usually one greedy app. Activity Monitor keeps that answer behind a window and a dozen columns. Bubo keeps it in the corner of your screen. The dot turns amber, then red, when something starts to drag, and one click shows you the culprit and quits it.

what one click opens

Everything Activity Monitor buries,
in one quiet popover.

Top apps

The eight heaviest processes, grouped per app, each with its own quit button. This is the whole point.

CPU

Overall load, per-core bars, efficiency and performance clusters, average temperature and die hotspot.

Memory

Used against total, DRAM read and write bandwidth, and a swap warning the moment your Mac starts thrashing.

GPU & fan

GPU usage, frequency and power draw. Live fan RPM, hidden on fanless Macs.

Battery

Charge, drain or charge rate, adapter watts, cycles, health and cell temperature.

Network & disk

Live throughput sparklines for both, auto-scaled from bytes to gigabytes per second.

Power rails

Per-rail draw for CPU, GPU, Neural Engine and DRAM, whatever your chip exposes.

Optimize

Purge the disk cache, or quit every heavy app at once, with a confirmation first.

Apple Silicon
native, M1 through M5
~280 KB
the whole download
No daemon
nothing runs in the background
No sudo
no root, no kernel extension
One click
to quit the heavy app
MIT
free and open source

Power, temperatures, fan speed and DRAM bandwidth come from private Apple frameworks that need no root. Everything else is plain macOS APIs. Two Swift files, no Electron.

install

One line, and it's watching.

$ brew install fajarhide/tap/bubo

The cask clears the Gatekeeper quarantine flag on install, so Bubo launches straight away. For the manual route, grab the .dmg, drag Bubo to Applications, then right-click the menu-bar item and turn on Open at Login.