Process Explorer

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

Free Windows

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 that runs in the terminal.

Free Open Source Mac OS X Linux BSD

Process Monitor

Process Monitor is an advanced monitoring tool for Windows that shows real-time file system, Registry and process/thread activity.

Free Windows

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 performance and running applications, processes and CPU usage, commit...

Free Windows

Process Lasso

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

Freemium Windows

GNOME System Monitor

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

Free Open Source Linux BSD GNOME

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.

Free Mac OS X

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 network) and software (file handles and modules) resources in real time.

Free Windows

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

Daphne

Daphne is a small (system tray) application for killing, controlling and debugging Windows' processes. It was born to kill a Windows process and became almost a task...

Free Open Source Windows

KillSwitch

KillSwitch is an advanced system monitoring tool that is apart of Comodo Cleaning Essentials (CCE) it allows users to identify, monitor and stop potentially unsafe processes that are running on endpoint systems.

Free Windows

bill2s process manager

Bill2's Process Manager is more than a task manager: Simple and intuitive Automated management of the priority and affinity of processes via rules you...

Free Windows

LXTask

lxtask is the standard task manager and system monitor of lxde. it starts via ctrl+alt+del and is extremely lightweight.

Free Open Source Linux

Chameleon Task Manager

Chameleon Task Manager is Windows task manager that enables the complete control of processes running on a computer optimizing the performance of Windows. It also...

Freemium Windows

vtop

vtop is a graphical command-line tool that uses unicode braille to chart CPU and memory usage. It can be easily extended.

Free Open Source Mac OS X Linux BSD

DBCTaskman

A windows 8-like Task Manager for Windows 7 ,work in progress!

Free Windows

ES Task Manager

A manager for tasks on the Android platform. An excellent task manager & killer. It can also optimize memory, storage, & cache. It integrates well with...

Free Android Kindle Fire

Free Extended Task Manager

The Extended Task Manager provides additional Windows process management features and information about disk activity and network port usage.

Free Windows

MagicanLite

Magican Lite is a free system monitor utility. It could help users monitor CPU and memory usage, watch on download and upload speed and detect temperature of CPU and GPU from the tiny and flexible floating window.

Free Mac OS X