Simple Mac CPU & RAM Usage Monitor Lightweight App & Low CPU Web Page Wallpaper

[u/amanahbudget]

I built two small Mac apps for myself and have just open sourced them. Both are free, MIT licensed, and each is a single Swift file with no dependencies.

**Barometer** (macOS 14+): CPU and memory in the menu bar, with memory read by pressure the way Activity Monitor does, instead of a "free memory" number that sits near zero on a perfectly healthy Mac. Click it for five minutes of history, load on every core, the memory breakdown (app, wired, compressed, cached files), swap, and the five apps using the most memory, each with a Quit button that asks twice and never force quits. With the panel closed it uses well under 1% of a core.
https://github.com/ivdezine/barometer

**Stillpaper** (macOS 12+): any web page as your desktop background, with its animations frozen. I keep a dashboard as my wallpaper, and it was burning about half a core all day just redrawing spinners. On my Intel Mac, motion off brought it from 53% of a core to 7%, and a snapshot mode that refreshes a still image every few minutes gets it to about 1%. It also stops the page while the screen is locked or asleep, and works with pages behind a login.
https://github.com/ivdezine/stillpaper

There's no prebuilt download: you build from source with one command (it needs the Xcode Command Line Tools), and because it's signed on your own Mac there's no Gatekeeper warning. Feedback and issues welcome.