WattSeal

WattSeal is a free, open-source desktop app that shows you exactly how much power your PC consumes, broken down by application and by hardware component, updated in real time. Unlike Task Manager (which shows CPU %, not watts) or HWiNFO (which reads sensors but can't map them to your software), WattSeal bridges hardware telemetry and running processes into a single unified view. It's the only tool that tells you not just that your GPU is drawing 180W, but which app is responsible.

Key features:

• Per-app power breakdown: see watts, electricity cost, and CO2 per running process
• Per-component monitoring: CPU, GPU, RAM, storage, and network, individually tracked
• Carbon footprint tracker: automatically converts consumption to CO2 based on your local grid
• Electricity cost calculator: know your PC's real impact on your bill
• Historical charts: spot trends over time with real-time, 1-min, 1-hour, or custom views
• Local database: all data stays on your machine, queryable for custom analytics
• Near-zero overhead: built in Rust, runs silently in the background
• No telemetry, no cloud, no tracking: 100% private

Reads directly from hardware sensors via RAPL (Intel/AMD CPUs), NVML (NVIDIA GPUs), and ADLX (AMD GPUs). Validated against real smart plug measurements. Works on Windows, macOS, and Linux — single executable, no installation required. Available in English and French. Free and open source under GPLv3.

Source code: https://github.com/Daminoup88/WattSeal