Open source System Tools apps for Mac

93 free, open source System Tools apps for macOS, most popular first. Pearcleaner, OpenInTerminal, PureMac and more, each installed in one click with OpenDMG.

Clayshell App StoreAlso by Arvind: an SSH server manager for Mac and iPhone.
PearcleanerApp Cleaner and Uninstaller Tool
OpenInTerminalFinder toolbar tool for opening the current folder in a terminal
PureMacFree open-source system cleaner with privacy protection
DockDoorWindow peeking for macOS
LatestApp update checker that notifies you of available updates for installed applications
DorsoPosture reminder that progressively blurs your screen when you slouch
Clean-MeSmall macOS app that acts as a system cleaner (logs, cache, ...)
TypeWhisperSpeech-to-text and AI text processing with local or cloud models
MacOptimizerPowerful macOS System Optimization and Management Tool
Mac CleanOpen-source cleaner that removes junk, scans for malware, uninstalls apps completely, and…
BurrowSystem cleaner and monitor with junk removal, app uninstall, disk analysis, live status…
FlowVisionA smooth waterfall-style viewer for images and videos on macOS
Finder GomacOS app and Finder Sync Extension to open Terminal, iTerm, Hyper from Finder
PurgeDeveloper-friendly disk cleaner that scans system caches, build artifacts, and dev tool…
RClickConfig you MacOS ContextMenu items, useing Latest Swift and SwiftUI
SiliconScopeSudoless Apple Silicon monitor with ANE, Media Engine, and memory bandwidth tracking
System DataReveal what is really inside "System Data" and delete it, item by item
Mac Performance MonitorPerformance analyzer that continuously logs CPU, GPU, memory, disk, battery, and…
VoxtMenu bar voice input and translation tool: press to talk, release to paste
JuiceMake your battery information a bit more interesting
UninstallyUninstall apps with leftover file removal, Homebrew package management, and Finder…
ForelOpen-source file automation tool that watches folders and applies rules, an alternative…
ClearDiskDeveloper cache cleaner that monitors 44+ cache paths and reclaims disk space
MacCheckHardware inspection tool for used Mac trading, with interactive tests for keyboard…
NeodiskRead-only disk space visualizer with treemap and sunburst views for analyzing storage…
MonolingualRemove unnecessary language resources from macOS
BirthView and manage all startup items — daemons, login items, and background agents — with…
FiScriptExecute custom scripts from the MacOS context menu (CTRL+click) in Finder
OverkillStop iTunes from opening when you connect your iPhone
Apple JuiceAdvanced battery gauge for macOS
v2sTurns microphone or app audio into real-time bilingual subtitles for meetings, calls…
HealthTickWork-break reminder tool with timed cycles and habit tracking for health
BinkyAutomated file organizer that intelligently sorts files based on types and custom rules
HagimiMonitorMenu bar monitor for Mac hardware metrics, history, and health scores
FileFlussDual-panel file manager with cloud storage support for seamless file operations
PeekXQuick Look Extension for Folder Preview on macOS
Window GlueTool for linking two windows to move and resize together
FindDiskKillerMonitor disk I/O, CPU, network, and file activity to reveal what's eating your drive
DiagnosticsSystem diagnostic report viewer for macOS application crash analysis
AtlasSystem maintenance workspace for cleaning, diagnosing, and safely restoring your Mac…
Fan Control UtilityReal-time fan speed monitor and controller with manual and automated modes for Intel and…
SidebarFavoritesAdd custom folders to macOS Finder Favorites and set icons
Duplicate FinderFinder for duplicate files with matching names
RascalKeyboard-first Finder replacement with dual panes, command palette, vim keys, and inline…
StasisSmart battery menu bar tool for real-time power metrics and charge limit control
macOrganizermacOS app for organizing files or removing unnecessary files
Core-MonitorOpen-source Apple Silicon system monitor for macOS
CleanerCleans caches, temp files, app leftovers, and duplicates with review-before-delete safety
RetroMacTransform your desktop with classic OS themes and authentic CRT shaders
DPIManagerUtility to enable HiDPI (Retina scaling) on external monitors using IOKit
Quick SymlinkFinder extension for creating symbolic links
FolderForgeCustomize folder icons with colors, images, symbols, text, emoji, or ICNS files
DustyMenu bar cleaner that frees disk space and memory, showing everything before it goes
QuittyAutomatically terminates applications when their last window is closed
MenuHelperA Finder Extension to boost your productivity
VitalsFast native system monitor for CPU, GPU, Neural Engine, SMC, disks, network, SMART, and…
OpenDictationOpen-source dictation tool with local and cloud speech-to-text support
Mac System Data CleanerTrack down and clean bloated system caches and hidden junk files
ViftyMenu bar fan control and charger power monitor with live thermals, RPM tuning, and…
SaneClickRun scripts from Finder's context menu with 62 ready-to-use actions
MacStateLightweight menu bar system monitor that combines key metrics into a single status item
App UninstallerLightweight app uninstaller with drag-and-drop support
Torrent PreviewQuick Look extension for previewing `.torrent` contents
ClickMateAdd a configurable action submenu to the Finder right-click context menu
Light StatsMenu bar instrument that shows whether your Mac is under pressure right now with a 0-100…
DepflushFinds dev leftovers like Docker images, node_modules, and dumps, sized before trashing
DimlyPer-display brightness, blackout, and sleep control for external monitors
HarboflyMenu bar disk cleaner that auto-scans build artifacts and caches, with one-click safe…
VisorProReplaces the native volume and brightness OSD with modern, highly customizable on-screen…
DiskWiseOpen-source disk cleaner whose only deletion path is the Trash, with per-session undo and…
AbendrotFree and open-source, warms every display at local sunset
AmpereLightweight menu bar app for monitoring battery status and controlling charging on Apple…
AmericanoMenu bar utility powered by caffeinate to prevent your device from sleeping
BoostFree up memory without closing apps, freeze and restore them exactly as they were
DisplayMode MenuQuickly switch display resolutions with Shortcuts integration
AiTranscribeOffline local speech-to-text transcription tool using advanced AI models
AirPoiseMenu bar app that uses your AirPods to coach your posture and turn head gestures into…
MacFanPro免费开源的风扇控制工具，提供菜单栏界面与命令行两种方式，适配 Apple Silicon，无订阅、无遥测。
MolerA NASA-Punk themed desktop application for disk cleaning and system maintenance
Battery HogShows per-app energy use to identify and quit what's draining your battery
ChargeMonitorBattery monitor for tracking charge status, health, and power metrics
BaristaSmall tray frontend for caffeinate to keep your device awake
CSV Quick LookQuick Look extension that previews CSV files as a spreadsheet
D-SwitchMenu bar utility for moving the mouse cursor between displays
DiskSageOpen-source disk cleaner with a sunburst map, duplicate finder, largest-files view, and…
mie-iconnerSet a custom image as a folder icon, with one-click revert
SpyglassQuick Look enhancer for Google Workspace stub files — shows real document previews…
EyeBreakMenu bar 20-20-20 eye break reminder — every 20 minutes, look 20 feet away for 20 seconds…
GocciMounts Google Drive anywhere in Finder, from the menu bar
EasyDisplayMenu bar tool that boosts XDR displays to 1000 nits on ordinary content, colors unchanged
Aman DiskS.M.A.R.T. health, temperature, and performance of internal drives, explained in plain…
AvakashaKeeps disk space free by showing what grows, planning what can go, and moving it to Trash…
PerformanceDaddyPerformance investigator showing local processes, ports, and RAM, with reviewed process…