



The best System Information alternative to Activity Monitor is Mission Center, which is both free and Open Source. If that doesn't suit you, our users have ranked more than 10 alternatives to Activity Monitor and ten of them are System Information Utilities so hopefully you can find a suitable replacement. Other interesting System Information Utility alternatives to Activity Monitor are Stats, iStat Menus, appstat and PowerTOP.




Menu bar tool for macOS shows real-time CPU, GPU, memory, disk, network, battery status, sensor data, fan speed, Bluetooth device info, multi-time zone clocks, customizable widgets, and historical graphs while ensuring privacy.

Advanced Mac utility with menubar monitoring for CPU, GPU, memory, disks, network, and sensors, including fan control, S.M.A.R.T status, Bluetooth battery tracking, weather, notifications, and deep customization. Combines multiple stats in a single view while prioritizing privacy.




Real-time monitoring of CPU, memory, disk, and thread metrics for running applications without workflow interruptions. Identify resource bottlenecks, memory leaks, and performance spikes. Freeware with no registration required, featuring dark/light modes, always-on-top option, and exportable logs for team analysis.


PowerTOP is a Linux tool to diagnose issues with power consumption and power management. In addition to being a diagnostic tool, PowerTOP also has an interactive mode where the user can experiment various power management settings for cases where the Linux distribution has not...


Explore all the tasks (processes) running on your Mac with TaskExplorer. Quickly see a task's signature status, loaded dylibs, open files, network connection, and much more!.




macOS menu bar utility written in SwiftUI that presents CPU, memory, disk, and network usage, plus Bluetooth battery levels, customizable Big Sur widgets, Dark Mode, and real-time sensor data. Open-source, lightweight, and compatible with Apple Silicon.

XRG is an open source system monitor for Mac OS X. XRG allows you to monitor CPU activity, memory usage, battery status, machine temperature, network activity, disk I/O, current weather, and stock market data.




Lightweight macOS menu bar utility providing live CPU, memory, disk, network, battery, and thermal state monitoring, supporting Apple Silicon and Intel hardware, with customizable interface options, low resource usage, and strong privacy protections.




Offers modular monitoring of CPU, Memory, Network, Disk, Battery, GPU, Bluetooth, Temperature, and Fans, each configurable and reorderable, with menu bar integration, notifications for low battery or storage, keyboard shortcuts, and color theme adaptation.


