System Temp Monitor Pro: Custom Thresholds, Widgets & Reports

Lightweight System Temp Monitor for Windows, macOS & Linux

What it is

A compact, low-overhead application that displays real-time temperatures for CPU, GPU, motherboard sensors, and drives across Windows, macOS, and Linux. Designed to run in the background with minimal resource use and provide quick access via a menubar/tray icon, widget, or lightweight GUI.

Key features

• Cross-platform support: Native builds or small ported binaries for Windows, macOS, and major Linux distros.
• Low CPU/memory footprint: Optimized polling intervals and efficient sensor libraries to avoid adding system load.
• Real-time display: Live temperature readouts for CPUs, GPUs, SSD/HDD, and motherboard sensors.
• Custom thresholds & alerts: Set temperature limits per component with visual, sound, or notification alerts.
• Logging & export: Optional CSV or JSON logs for trend analysis and troubleshooting.
• Fan control hooks (optional): Integrations to adjust fan curves where supported (requires elevated permissions).
• Widgets & tray/menu integration: Small widgets, menubar icons, or system tray indicators for at-a-glance monitoring.
• Portable mode: Single executable or small package that runs without installation (where allowed).
• Open-source-friendly: Modular design to swap sensor backends or add platform-specific features.

Typical use cases

• Preventing thermal throttling during gaming or heavy workloads.
• Monitoring long-running compute tasks (rendering, compilation, training).
• Detecting failing cooling (fans or heatsinks) before damage occurs.
• Collecting temperature logs for QA or benchmarking.

Implementation notes (technical)

• Use native sensor APIs where available: Windows WMI/WinRing0/LibreHardwareMonitor, macOS IOKit/SMC, Linux lm-sensors/sysfs.
• Prefer event-driven updates where supported; otherwise use adaptive polling (e.g., 1–5s by default, lengthen when idle).
• Keep UI rendering decoupled from sensor polling to avoid UI jank.
• Store logs in user-accessible locations; respect platform conventions (AppData, ~/Library, ~/.local/share).
• Secure elevated actions (fan control) behind clear permissions and require user consent.

Recommended default settings

• Polling interval: 2–5 seconds.
• Alert thresholds: CPU 85°C, GPU 90°C, drives 60°C (adjustable).
• Log retention: 30 days by default with rotation.

Licensing & distribution

• Recommend permissive open-source license (MIT/Apache) for community contributions, or dual-license if including proprietary fan-control modules.
• Distribute via platform stores (Microsoft Store, Homebrew/cask, apt/snaps) and provide downloadable releases.

If you want, I can draft a short app requirements spec, UI mockup, or the README for such a project.