Top SYSTEM-MONITOR GitHub Repositories & Tools (2026)

Free and open-source macOS menu bar toolkit.

A menu bar system monitor for macOS. CPU, memory, GPU, network, disk, battery and thermals at 0.046% CPU.

A diagnostic performance logging utility for macOS: logs CPU, memory, GPU, network, and battery from the menu bar to help detect and diagnose performance issues. Free, open source, no telemetry.

🐹 Cleanup, app management, maintenance, disk analysis, and live status in one free, open-source, native Mac app + extensive support for AI agents.

Sudoless Apple Silicon system monitor (native SwiftUI GUI) with ANE / Media Engine / memory-bandwidth tracking

Real-time PC power consumption monitor - see watts per app & per component, track your carbon footprint & electricity cost.

Free, open-source menu bar toolkit for macOS. Eighteen tools in one panel: Pomodoro timer, time tracker, keep-awake, system monitor, clipboard history, file converter, window manager, torrents, archives, OCR, screenshots, draw on screen, color picker, VPN switcher, app launcher, uninstaller, keyboard lock, speed test. SwiftUI, no telemetry, MIT.

A retro Macintosh-inspired system monitor for macOS.

A compact screen-edge system monitor for Windows and Linux, built with Avalonia and .NET.

Native open-source system monitor for macOS — Apple Silicon, SMC sensors, processes, disks, network and system health.