Xonsh is a Python-ish, BASHwards-looking shell language and command prompt. The language is a superset of Python 3.4+ with additional shell primitives that you are used to from Bash and IPython. It works on all major systems including Linux, Mac OSX, and Windows. Xonsh is meant for the daily use of experts and novices alike.

Gash-Utils provides Scheme implementations of many common POSIX utilities (there are about 40 of them, ranging in complexity from false to awk). The utilities are designed to be capable of bootstrapping their standard GNU counterparts. Underpinning these utilities are many Scheme interfaces for manipulating files and text.

fish-foreign-env wraps bash script execution in a way that environment variables that are exported or modified get imported back into fish.

Es is an extensible shell. The language was derived from the Plan 9 shell, rc, and was influenced by functional programming languages, such as Scheme, and the Tcl embeddable programming language. This implementation is derived from Byron Rakitzis's public domain implementation of rc, and was written by Paul Haahr and Byron Rakitzis.

Scsh is a Unix shell embedded in Scheme. Scsh has two main components: a process notation for running programs and setting up pipelines and redirections, and a complete syscall library for low-level access to the operating system.

Dash is a POSIX-compliant /bin/sh implementation that aims to be as small as possible, often without sacrificing speed. It is faster than the GNU Bourne-Again Shell (bash) at most scripted tasks. Dash is a direct descendant of NetBSD's Almquist Shell (ash).

Fish (friendly interactive shell) is a shell focused on interactive use, discoverability, and friendliness. Fish has very user-friendly and powerful tab-completion, including descriptions of every completion, completion of strings with wildcards, and many completions for specific commands. It also has extensive and discoverable help. A special help command gives access to all the fish documentation in your web browser. Other features include smart terminal handling based on terminfo, an easy to search history, and syntax highlighting.

loksh is a Linux port of OpenBSD's ksh. It is a small, interactive POSIX shell targeted at resource-constrained systems.

This is a reimplementation by Byron Rakitzis of the Plan 9 shell. It has a small feature set similar to a traditional Bourne shell.

Oils is a programming language with automatic translation for Bash. It includes OSH, a Unix/POSIX shell that runs unmodified Bash scripts and YSH is a legacy-free shell, with structured data for Python and JavaScript users who avoid shell.

Oils is a programming language with automatic translation for Bash. It includes OSH, a Unix/POSIX shell that runs unmodified Bash scripts and YSH is a legacy-free shell, with structured data for Python and JavaScript users who avoid shell.

S is a new shell that aims to be extremely simple. It does not implement the POSIX shell standard.

There are no globs or "splatting" where a variable $FOO turns into multiple command line arguments. One token stays one token forever. This is a "no surprises" straightforward approach.

There are no redirection operators > in the shell language, they are added as extra programs. > is just another unix command, < is essentially cat(1). A andglob program is also provided along with s.

Oksh is a portable OpenBSD ksh. Not an official OpenBSD project. Unlike other ports of OpenBSD ksh, this port is entirely self-contained and aims to be maximally portable across operating systems and C compilers.

Gash is a POSIX-compatible shell written in Guile Scheme. It provides both the shell interface, as well as a Guile library for parsing shell scripts. Gash is designed to bootstrap Bash as part of the Guix bootstrap process.

GNU Rush is a restricted user shell, for systems on which users are to be provided with only limited functionality or resources. Administrators set user rights via a configuration file which can be used to limit, for example, the commands that can be executed, CPU time, or virtual memory usage.

mksh is an actively developed free implementation of the Korn Shell programming language and a successor to the Public Domain Korn Shell (pdksh).

This projects aims at gathering/developing new completion scripts that are not available in Zsh yet. The scripts may be contributed to the Zsh project when stable enough.

Fish-like fast/unobtrusive autosuggestions for zsh. It suggests commands as you type.

This package provides a shell formatter. Supports POSIX Shell, Bash, and mksh.

conflict examines the user-specifiable list of programs, looking for instances in the user's path which conflict (i.e., the name appears in more than one point in the path).

The file renaming utilities (renameutils for short) are a set of programs designed to make renaming of files faster and less cumbersome. The file renaming utilities consists of five programs: qmv, qcp, imv, icp, and deurlname.

This package provides a zsh vimkey plugin with more features, which more closely matches the standard behavior of vim.

HSTR (HiSToRy) is a command-line utility that brings improved Bash and Zsh command completion from the history. It aims to make completion easier and more efficient than with Ctrl-R. It allows you to easily view, navigate, and search your command history with suggestion boxes. HSTR can also manage your command history (for instance you can remove commands that are obsolete or contain a piece of sensitive information) or bookmark your favourite commands.

Tracks your most used directories, based on ``frecency''. After a short learning phase, z will take you to the most ``frecent'' directory that matches all of the regexes given on the command line in order.