Every watt,accounted for.
A sudoless system monitorfor Apple Silicon
Reads power, temperature and per-process watts straight from macOS. No sudo, no kexts, no daemons.
macOS knows exactly what every process costs in watts, how hot each corner of your chip runs, and how fast every core is clocked. It just hides all of it behind sudo powermetrics and paid apps. mxmon reads the lot, sudoless, in your terminal. But first, look at it:
The whole machine, one screen
CPU, power, GPU, memory, network, battery and thermals: every subsystem, live, in a single glance.
A real watts column
Sort by PWR to see what is actually draining the battery. macOS otherwise only exposes that per-process energy through sudo powermetrics.
A live map of your chassis
Fifty-plus die and board sensors, drawn where they physically sit. Watch the heat move across the machine in real time.
Every connection, per process
Live TCP and UDP flows with rates, round-trip time and retransmits. nettop, without the wall of text.
Reflows anywhere
From an ultrawide down to a sliver of a terminal, mxmon rebalances into one clean column. Nothing gets cut.
Born from sudo powermetrics.
Why it exists
Apple Silicon measures itself constantly. Every power rail in watts, every DVFS clock, more than fifty temperature sensors across the die and the board, the exact energy each process burns. The instrumentation is extraordinary, and almost none of it reaches you.
macOS locks the good numbers behind a root-only tool called powermetrics, or hands them to paid apps and background daemons. So the data sits there, measured and ready, and nobody looks.
mxmon reads it straight from the same macOS frameworks (IOReport, the SMC, IOHID) with no sudo, no kexts, and nothing left running in the background. One binary, in your terminal.
Your Mac measures everything. It just won't show you.
The catch
Open Activity Monitor and you get CPU percentages and a memory bar. Useful, and about a tenth of what the chip actually knows about itself.
The watts, the per-core clocks, the thermal map, the per-process energy: all measured in hardware, all a permission prompt or a paywall away. The gap was never the data. It's the door.
Per-rail watts, DVFS clocks, fifty-plus sensors and per-process energy, sampled constantly in silicon, whether you look or not.
Activity Monitor hides the watts and the heat. The rest needs sudo powermetrics or a paid app. So almost nobody sees it.
mxmon is the missing tenth: it takes everything your Mac already measures and finally puts it on screen, sudoless.
Sample. Diff.
Redraw. Sip.
mxmon samples in tiers, fast things fast and slow things slow, and only repaints when a number actually changes. Leave it running all day; it barely registers.
Every 250ms: per-core CPU, power draw and DVFS clocks, the numbers that move moment to moment.
Every 500ms: the energy rails and GPU, read from the SoC's own counters.
Every second: temperatures, fans and disk, the things that drift, not spike.
Every two seconds: the full process table, sorted, with per-process watts.
Sudoless by design.
No root required
All of it, without root. Every number mxmon shows is read straight from a public macOS framework, never from sudo, a kernel extension, or a background daemon. The four sources below are the whole supply chain.
Read the sourceApple's energy and DVFS counters: watts per rail, and the clock residency of every core.
The System Management Controller: fans, adapter and system power, and per-chip temperature keys.
AGX GPU stats and the IOHID sensor services: the fifty-plus die and board thermistors.
Per-process footprint, energy and cycle counts: the raw material for the PWR column.
A ladder of Mac monitors. mxmon is the top rung.
Where it sits
Everyone starts with Activity Monitor. Some graduate to htop or bottom for a real process table. Almost no one gets to the layer underneath: the watts, the clocks, the thermal map, all kept behind sudo.
mxmon lives on that top rung, and it is sudoless getting there. Here is the climb:
- L1Activity Monitor. The GUI everyone has. CPU and memory, no watts, no clocks, no per-chip heat.
- L3htop / bottom. A proper process table in the terminal, but blind to Apple Silicon's power and thermal hardware.
- L5mxmon. Every rail in watts, every sensor, per-process energy and live connections. Sudoless.
It reads the exact same counters Activity Monitor does. It just shows you the ninety percent Apple left out.
One monitor, seventeen themes.
neon out of the box, and it remembers yours. Press t to cycle and every panel, graph and heat-map retints on the spot. Here are six of the seventeen.
Dracula
The cult classic. Deep grey with purple and pink.
Tokyo Night
Cool blues and a neon-skyline glow.
Gruvbox
Warm, retro and low-contrast. Kind to tired eyes.
Synthwave
A Miami sunset, magenta and cyan on plum.
Catppuccin
Soft pastels; the internet's favourite palette.
Cyberpunk
High-voltage neon, maximum contrast.
brew install yusufmo1/tap/mxmoncargo install mxmongit clone https://github.com/yusufmo1/mxmon && cd mxmon
cargo build --release && ./target/release/mxmon