Hamilton C shell!

Cygwin is a Unix-like environment and command-line interface for Microsoft Windows. Cygwin provides native integration of Windows-based applications, data, and other system resources with applications, software tools, and data of the Unix-like environment.

Command Prompt, also known as cmd.exe or cmd (after its executable file name), is the command-line interpreter on Windows NT, Windows CE, OS/2 and eComStation operating systems. It is the counterpart of COMMAND.COM in DOS and Windows 9x systems (where it is also called "MS-DOS Prompt"), and analogous to the Unix shells used on Unix-like systems.

MSYS2 is an independent rewrite of MSYS, based on modern Cygwin (POSIX compatibility layer) and MinGW-w64 with the aim of better interoperability with native Windows software.

win-bash is a Windows port of the famous GNU bash (see GNU Bash homepage).

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PyCmd is a smart command prompt extension for Windows cmd.exe; its purpose is to emulate a few power features of UNIX shells (decent Tab-completion, persistent history, etc.) while remaining 100% compatible with the cmd.exe syntax.

CMD++ is a command line program, which was devoloped as alternative to the Windows (R) console. You can use it at public places (eg. at school) when the native console is locked but you do need to run a program in the console (eg. to type arguments).