A lightweight system monitor that lives in your Windows system tray, built with Java Swing and a dark JetBrains-inspired look.
The tray icon changes color in real time based on your CPU temperature (green when cool, red when hot). Left-click it to open a compact popup with live stats and graphs for CPU, GPU, RAM, disk, and network.
- Temperature-driven tray icon (green to red color gradient)
- Live per-component panels with scrolling history graphs
- CPU usage, frequency, temperature, and core stats
- GPU, RAM, disk, and network monitoring panels
- Dark theme with rounded cards
- Overflow error if you run the app for a few years :)
| Library | Purpose |
|---|---|
| AWT and Swing | Tray Icon and Popup UI |
| FlatLaf | Dark look-and-feel |
| OSHI | Hardware & sensor data |
| JFreeChart | Live history graphs |
| Component | Windows | Linux |
|---|---|---|
| CPU temps | OSHI / LibreHardwareMonitor | OSHI |
| GPU temps (NVIDIA) | LibreHardwareMonitor | nvidia-smi |
| GPU temps (AMD) | LibreHardwareMonitor | sysfs hwmon (/sys/class/hwmon/) |
| RAM, disk, network | OSHI | OSHI |
| OS | Supported? |
|---|---|
| Windows | Yes |
| Linux | Not Yet |
| macOS | No |
If you are willing to add support for any of the unsupported platforms, I'd be happy to merge a PR!
- Java 17+
./gradlew buildRun with:
./gradlew runThe app starts minimized to the system tray. Left-click the icon to open the stats window. Right-click for a context menu with an exit option.
I used AI as a mentor for working through UI layout decisions and architecture questions. All code was written by me. I also used it for writing docs, such as parts of this README you're reading right now.
Licensed under the GNU General Public License v3.0 (GPL-3.0-only). See LICENSE for details.