Alternatives to SystemExplorer for all platforms with any license

Process Explorer

Process Explorer shows you information about which handles and DLLs processes have opened or loaded.

Free Windows PortableApps.com
Portable Add a feature

677 Like
Process Hacker

Process Hacker is a feature-packed tool for manipulating processes and services on your computer. A free and open source process viewer with powerful process...

Free Open Source Windows PortableApps.com
Cpu monitoring Disk Monitoring Filtering Feature Granular Detail on Processes ... I/O Monitoring Network Monitoring Portable Add a feature

219 Like
htop

htop is an interactive process viewer for Linux. It is a text-mode application (for console or X terminals) and requires ncurses. htop is an interactive top replacement...

Free Open Source Mac OS X Linux BSD
Performance Monitoring Add a feature

197 Like
Process Monitor

Process Monitor is an advanced monitoring tool for Windows that shows real-time file system, Registry and process/thread activity. It combines the features of two legacy...

Free Windows PortableApps.com
Portable Add a feature

133 Like
glances

Glances is a CLI curses based monitoring tool for GNU/Linux and BSD OS. Glances uses the PsUtil library to get information from your system. It is developed in Python.

Free Open Source Mac OS X Windows Linux BSD
Network Monitoring Clear interface Command line interface Hardware Monitoring Add a feature

27 Like
Windows Task Manager

Windows Task Manager is a task manager application included with Microsoft Windows NT family of operating systems that provides detailed information about computer...

Free Windows
No features added Add a feature

53 Like
GNOME System Monitor

System Monitor is a tool to manage running processes and monitor system resources.

Free Open Source Linux BSD GNOME
No features added Add a feature

24 Like
WinSpy++

WinSpy++ is a handy programmer's utility which can be used to select and view the properties of any window in the system. WinSpy is based around the...

Free Open Source Windows
No features added Add a feature

13 Like
Resource Monitor

Resource Monitor is a system application in Microsoft Windows operating systems. It is used to view information about the use of hardware (CPU, memory, disk, and...

Free Windows
Hardware Monitoring Performance Monitoring Add a feature

16 Like
Xfce Task Manager

Easy to use application for monitoring and controlling running processes. - Support for Linux, OpenBSD, NetBSD, FreeBSD and OpenSolaris. - Monitors the CPU and...

Free Open Source Linux
No features added Add a feature

8 Like
AnVir Task Manager

This tool controls programs, disk, CPU. Replace task manager, tweak and tune up XP or Vista. Speed up windows startup. Get rid of spyware and viruses.

Freemium Windows
Hardware Monitoring Portable Add a feature

26 Like
- Warning Be careful! The downloader of AnVir Task Manager can install malwares! To avoid the InstallManager read the post at http://alternativeto.net/discussions/applications/12033/how-to-avoid-the-installmanager/
Atmonitor

Mac OS X System Monitor and Process Explorer Tool atMonitor is the most advanced monitoring tool for Mac OS X that displays system activity in real-time. It is designed...

Free Mac OS X
Hardware Monitoring Add a feature

18 Like
- Discontinued The official website is no longer available. Last version, 2.7.1, released on August 2012, can be still downloaded from Wayback Machine.
FCorp Image Hijacker

Image Hijacker is a small and easy to use application that allows you to run a program via another one to hide it from prying eyes. You can also use this program to...

Free Windows
Portable Add a feature

9 Like
- Discontinued Development of FCorp Software has been discontinued in 2016. Last version of Image Hijacker, released in April 2016, can be still downloaded from SoftPedia.
XRG

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...

Free Open Source Mac OS X
Hardware Monitoring Network Monitoring Add a feature

5 Like
TaskExplorer

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...

Free Mac
No features added Add a feature

3 Like