System Monitor GitHub Repositories (2026) · Open Source Tools

Free and open-source macOS menu bar toolkit.

A native macOS system toolkit: honest memory optimization, deep cleanup that finds the real space hogs, fan control, keep-awake, disk analyzer.

A free, powerful, multi-purpose tool that helps you monitor system resources, debug software and detect malware. Brought to you by Winsider Seminars & Solutions, Inc. @ https://windows-internals.com

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.

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

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.

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

Turn an old Android phone into a local desk panel for Windows, Linux and macOS. 55 widgets, Smart Stack, AI quotas and sessions, media controls, USB or paired Wi-Fi.

Libre Hardware Monitor is free software that can monitor the temperature sensors, fan speeds, voltages, load and clock speeds of your computer.

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

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

A lightweight, private system monitor that lives in your macOS menu bar. CPU, memory, battery, network, disk, GPU, temperature, fans. Zero telemetry.

See what keeps using your disk.

A customizable Windows desktop island for music, focus, live lyrics and your own AI companion.

A small, quiet system monitor for Apple Silicon Macs: one floating glass panel that works at any size.

An open source hardware monitoring agent for Checkmate

Free, open-source Mac cleaner: a native SwiftUI app for Mole. Clean caches, uninstall apps and their leftovers, map your disk, monitor your Mac. A CleanMyMac alternative.

Lightweight VPS monitoring with agent + server + web dashboard. Rust + React monorepo.

A native, privacy-focused macOS cleaner and productivity toolbox for storage, system maintenance, screenshots, networking, and everyday tasks.