In computing, a command-line interpreter, or command language interpreter, is a blanket term for a certain class of programs designed to read lines of text entered by a user, thus implementing a command-line interface.

Operating system shells

Main article: Shell (computing)

AmigaOS

Amiga CLI/Amiga Shell

Unix-like systems

There are many variants of Unix shell:

Bourne shell sh
- Almquist shell (ash)
  - Debian Almquist shell (dash)
- Bash (Unix shell) bash
- KornShell ksh
  - Z shell zsh
C shell csh
- TENEX C shell tcsh
Ch shell ch
Emacs shell eshell
Friendly interactive shell fish
PowerShell pwsh
rc shell rc, a shell for Plan 9 from Bell Labs and Unix
Stand-alone shell sash
Scheme Shell scsh

Microsoft Windows

Native

COMMAND.COM, the original Microsoft command line processor introduced on MS-DOS as well as Windows 9x, in 32-bit versions of NT-based Windows via NTVDM
cmd.exe, successor of COMMAND.COM introduced on OS/2 and Windows NT systems, although COMMAND.COM is still available in virtual DOS machines on IA-32 versions of those operating systems also.
Recovery Console
Windows PowerShell, a command processor based on .NET Framework
- PowerShell, a command processor based on .NET
Hamilton C shell, a clone of the Unix C shell by Hamilton Laboratories
Take Command Console (4NT), a clone of CMD.EXE with added features by JP Software
Take Command, a newer incarnation of 4NT

Unix/Linux compatibility layer and POSIX subsystem

CP/M

Main article: CP/M

Console Command Processor (CCP), the default command line interpreter
ZCPR for the Z-System
Microshell

DOS

Main article: DOS

COMMAND.COM, the default command-line interpreter
4DOS, a compatible, but more advanced shell by JP Software
NDOS, provided with some versions of the Norton Utilities
GW-BASIC

OS/2

Main article: OS/2

CMD.EXE, the default command-line interpreter
Hamilton C shell, a clone of the Unix C shell by Hamilton Laboratories
4OS2, a clone of CMD.EXE with additional features by JP Software

IBM i

Main article: IBM i

Apple computers

Mobile devices

DROS, Java ME platform based DOS-like shell for smartphones

Network routers

Main article: Network router

Cisco IOS^[1]
Junos Command Line Interface (Juniper Networks)^[2]

Minicomputer CLIs

Data General's CLI (Command Line Interpreter) on RDOS and AOS Operating Systems and their variants
Digital Equipment Corporation's DIGITAL Command Language (DCL)

Other

BASIC-PLUS (RSTS/E)
CANDE MCS – command-line shell and text editor on the MCP operating system
Conversational Monitor System (VM/CMS)
DOS Wedge (an extension to the Commodore 64's BASIC 2.0)
DIGITAL Command Language (OpenVMS)
Extensible Firmware Interface shell
Microsoft BASIC (qualifies both for a programming language and OS)
Singularity (operating system)
SymShell, see SymbOS
Time Sharing Option (MVS, z/OS)
Atari TOS shell
YouOS shell
EFI-SHELL – an open source Extensible Firmware Interface command shell

Programming

Language systems

APL
BASIC – actually, many dialects and varieties of a programming language may have commands like kill, system, files, and others which allow operating system access from the interactive and often from programme mode
BeanShell, a shell for Java
F#
J
Haskell
Lisp
- Common Lisp Interface Manager
Macintosh Programmer's Workshop, an old command-line environment used to develop software on Classic Mac OS
Prolog
Scala
Smalltalk
Standard ML

Debuggers

This section needs expansion. You can help by adding to it. (September 2012)

DEBUG
gdb
DDT, a PDP-10 debugger from DEC used as a command shell for the MIT Incompatible Timesharing System
Firebug/Chromebug, a JavaScript shell and debugging environment as a Firefox plugin

Scientific and engineering software