Alternatives to Security Task Manager 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

689 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 Granular Detail on Processes I/O Monitoring ... Network Monitoring Portable Add a feature

238 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 Linux BSD
Performance Monitoring Add a feature

205 Like
ES File Explorer

ES File Explorer is a free, featured all-in-one file manager, application manager, task killer, webDAV client & FTP client for your Android phone. File Manager...
- Warning The app was bought by another company and bundled with adwares.
Freemium Android Android Tablet Kindle Fire Fire TV
File Compression File Searching Support for FTP Add a feature

162 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 Windows Linux BSD
Network Monitoring Command line interface Hardware Monitoring Add a feature

33 Like
SystemExplorer

System Explorer is an enhanced Taskmanager that provides detailed information about running processes, startup programs, IE add-ons (BHOs), drivers, services network...

Free Windows PortableApps.com
Hardware Monitoring Portable System Info Add a feature

87 Like
Process Lasso

Process Lasso is NOT yet another task manager. It is a process priority optimization and system automation utility. Priority optimization, affinity optimization, core...

Freemium Windows
Portable Process Lasso manages Responsive design Add a feature

47 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
System Info Add a feature

54 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

27 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.
- 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/
Freemium Windows
Hardware Monitoring Portable Add a feature

29 Like
EMCO UnLock IT

A neat free utility that helps you to take control of any file or folder when it is locked by some application or system. For every locked resource, you get a list of...

Free Windows
Windows Explorer integration Add a feature

12 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

9 Like
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...
- Discontinued The official website is no longer available. Last version, 2.7.1, released on August 2012, can be still downloaded from Wayback Machine.
Free Mac
Hardware Monitoring Add a feature

18 Like
StatusPilatus

StatusPilatus Monitor your PC like never before! Features - Cross-platform and free Monitoring - CPU usage, flags and temperature - GPU information, with support...

Free Open Source Mac Windows Linux
Hardware Monitoring Network Monitoring System Info Add a feature

2 Like
Linux Process Explorer

Linux process explorer, behaves the same as the windows process explorer from Mark Russinovich.

Free Open Source Linux
No features added Add a feature

8 Like