diskMon
Know what’s using your memory.
Sunrise over layered mountain peaks
Open source · For macOS, Windows and Linux

diskMon.
See where your RAM goes.

It’s always Chrome. Now you can prove it.
Every process, grouped into the app it belongs to.

Read-only. Nothing leaves your computer.
EVERY PROCESS HAS A PLACE.TRY THE SAMPLE SNAPSHOT
diskMonINTERACTIVE PREVIEW · SAMPLE DATA
diskMon/
18.15 GB· 412 processes · 33 appsBrowsersIDEsLanguage serversBuildsContainersDatabasesLocal AIAppsSystemHas an alert
Google Chrome4.60 GBGoogle Chrome Helper (GPU)540 MBGoogle Chrome412 MBGoogle Chrome Helper (Renderer)406 MBGoogle Chrome Helper (Renderer)394 MB
Ollama3.08 GBollama_llama_server2.89 GB
Docker2.80 GBcom.docker.virtualization2.06 GB
Visual Studio Code1.90 GBCode Helper (Renderer)620 MBCode Helper (Plugin)478 MB
macOS System1.60 GB
rust-analyzer1.10 GBrust-analyzer1.10 GB
Slack
Cargo build
Figma
Spotify
PostgreSQL
clickselectenteropenbkspup/filter1 2 3modeppauseeexportesccleardiskMon 0.3.0 · sampled 412 processes · 38 ms · updated 1s ago
Read-only by design Runs fully on your computer Written in Rust
01 / FROM PROCESSES TO ANSWERS

Fewer PIDs.
More answers.

Activity Monitor gives you 412 PIDs. diskMon tells you it’s Ollama. It groups processes into the apps you actually run and shows which ones are using your memory.

See every workload.

diskMon reads every running process and folds helpers into the app they belong to, from browsers and IDEs to language servers, Docker, Ollama and system processes.

01 / GROUP

Map the memory.

Each app becomes a tile in a nested treemap with its processes inside. Size it by memory, CPU or disk I/O, then zoom into any app to see what it is running.

02 / MAP

Catch problems early.

Alerts flag apps using 25% or more of your RAM, memory growth of over 100 MB, sustained high CPU, sudden process storms and high memory pressure.

03 / DIAGNOSE
02 / WHERE IT STANDS

Early days.
A solid core.

diskMon 0.3.0 is a free desktop app for macOS, Windows and Linux. It is early: the core is solid, and code signing comes next.

MEET DISKMON

Your memory, explained.

Free and open source under the MIT license.

  • Live memory, CPU & disk I/O for every app
  • Nested treemap with zoom & filter
  • Alerts for leaks, CPU spikes & process storms
  • Privacy-redacted Markdown reports
03 / GOOD QUESTIONS

A little more
peace of mind.

No. diskMon only reads process information from your operating system. It never kills, pauses, or modifies a process. The preview on this page is a simulation with sample data and does not read anything from your device.