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operating system An operating system (OS) is system software that manages computer hardware and software resources, and provides common daemon (computing), services for computer programs. Time-sharing operating systems scheduler (computing), schedule tasks for ...
s, a task manager is a system monitor program used to provide information about the processes and applications running on a
computer A computer is a machine that can be Computer programming, programmed to automatically Execution (computing), carry out sequences of arithmetic or logical operations (''computation''). Modern digital electronic computers can perform generic set ...
, as well as the general status of the computer. Some implementations can also be used to terminate processes and applications, as well as change the processes' scheduling priority. In some environments, users can access a task manager with the Control-Alt-Delete
keyboard shortcut In computing, a keyboard shortcut (also hotkey/hot key or key binding) is a software-based assignment of an action to one or more keys on a computer keyboard. Most Operating system, operating systems and Application software, applications come ...
. Task managers can display running services. ( processes) as well as those that were stopped. They can display information about the services, including their
process identifier In computing, the process identifier (a.k.a. process ID or PID) is a number used by most operating system kernel (operating system), kernels—such as those of Unix, macOS and Windows—to uniquely identify an active Process (computing), process. ...
and
group identifier In Unix-like systems, multiple users can be put into '' groups''. POSIX and conventional Unix file system permissions are organized into three classes, ''user'', ''group'', and ''others''. The use of groups allows additional abilities to be dele ...
.


Common task managers

* Activity Monitor, included in macOS * Conky, for the X Window System *
htop htop is an interactive system monitor process viewer and process manager. It is designed as an alternative to the Unix program top (software), top. It shows a frequently updated list of the processes running on a computer, normally ordered by t ...
, for the Unix shell * Plasma System Monitor, included in KDE Plasma Desktop * nmon, for Linux and AIX * ps, for the Unix shell * Task Manager, included in Windows * tasklist, for DOS * TaskManager, included in MorphOS *
top Top most commonly refers to: * Top, a basic term of orientation, distinguished from bottom, front, back, and sides * Spinning top, a ubiquitous traditional toy * Top (clothing), clothing designed to be worn over the torso * Mountain top, a moun ...
, for the Unix shell * Browser Task Manager in
Chromium Chromium is a chemical element; it has Symbol (chemistry), symbol Cr and atomic number 24. It is the first element in Group 6 element, group 6. It is a steely-grey, Luster (mineralogy), lustrous, hard, and brittle transition metal. Chromium ...
-based browser such as
Google Chrome Google Chrome is a web browser developed by Google. It was first released in 2008 for Microsoft Windows, built with free software components from Apple WebKit and Mozilla Firefox. Versions were later released for Linux, macOS, iOS, iPadOS, an ...
and
Microsoft Edge Microsoft Edge is a Proprietary Software, proprietary cross-platform software, cross-platform web browser created by Microsoft and based on the Chromium (web browser), Chromium open-source project, superseding Edge Legacy. In Windows 11, Edge ...
, which displays CPU and memory usage of tabs


References

* Task managers {{compu-prog-stub