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Tauri System Monitor (Task Manager)

A lightweight, cross-platform system monitoring tool (Task Manager alternative) built with Rust and Tauri. It reads low-level OS telemetry (CPU, RAM, Disk and Network I/O, processes) and streams it over Tauri's IPC bridge to a reactive React frontend.

Source code

Tech stack

Frameworks & libraries

Performance & metrics

  • Core logic compiled to native machine code eliminates V8 overhead and drastically reduces baseline RAM compared to Electron apps
  • Optimized CPU sampling loop with deterministic thread sleeping (MINIMUM_CPU_UPDATE_INTERVAL) for accurate CPU deltas without thread thrashing
  • Low-latency IPC streaming from Rust to the UI
  • Ultra-low background resource consumption

Why I built it

Standard task managers are either OS-locked (like Windows Task Manager) or built on Electron, which bundles a full Chromium instance and Node.js runtime — ironically consuming the very RAM it is trying to monitor. I wanted a universally deployable, bare-metal fast monitor that respects system resources, and a demonstration of how to bridge low-level OS system calls to a modern web UI securely and efficiently, with no Node.js backend at all.

Architecture & decisions

The backend is written purely in Rust, using the sysinfo crate to hook directly into cross-platform OS APIs (e.g., procfs on Linux, WMI on Windows). It calculates instantaneous CPU deltas, tracks discrete disk I/O writes, and aggregates memory allocations. This raw telemetry is bound to Rust structs, serialized into JSON via serde, and transmitted asynchronously over Tauri's IPC boundary (invoke). The presentation layer is a component-driven React application using React Router for isolated view management and hooks (useEffect, useState) for periodic state hydration; the UI acts purely as a consumer, so no business logic ever blocks the render thread.

Key features

  1. 01Real-time OS telemetry: per-core CPU deltas, Memory/Swap utilization, Disk I/O, and network interface throughput
  2. 02Active process tracking and memory footprint analysis
  3. 03Cross-platform compatibility (Windows, macOS, Linux) through a unified Rust backend that abstracts kernel differences
  4. 04Asynchronous IPC routing native system data directly to isolated React components
  5. 05Zero-Node.js backend using Tauri's lightweight WebView for the presentation layer