A tool like grep optimized for programmers; written in Perl, it speeds up searches thanks to skipping non interesting directories, such as .git.

Executes SQL-like queries on CSVs/TSVs tabular data files; each tabular file is treated as a database table; support to all SQL constructs (WHERE, GROUP BY, JOIN).

Utility that allows users to choose one option from a set of choices using an interface with fuzzy search functionality.

A Python script that

1) receives input lines from stdin or a file,
2) lists the input lines and waits for input that filter/select the line(s),
3) outputs the selected line(s) to stdout;

Can be used to add interactivity to many regular shell commands.

(JSON Query?) is sed-like processor for JSON data; can be used to process JSON files and data streams and perform operations such as those allowed by cat, sed, grep and awk on regular text files.

(Generic Colouriser) can be configured to parse a given text stream and to colorize it according to regexp written in configuration files; different patterns can be associated to file types.

A cat command with colorized output.

A program that tries to improve FIGlet; can load FIGlet fonts; supports Unicode input and output, colour fonts and output, and various output formats, including HTML, IRC and ANSI; uses libcaca to produce nice textual effects.

Not exactly a font manager, but a nice program for making large letters out of ordinary text; an astonishing number of different fonts is available.

Secure and simple terminal sharing.

Terminal multiplexer; born to improve screen; client-server architecture, vi and emacs key-bindings, search in window feature and many more.

A fork of tmux that allows to share the terminal with other users. AFAIK, it connects to a centralized server to establish the connection. Someone may see this inconvenient for privacy issues.

Terminal multiplexer that split a physical terminal between several processes, typically interactive shells.

A text-based window manager and terminal multiplexer; it features enhanced profiles, convenient keybindings, configuration utilities, and toggle-able system status notifications; compatible with screen and tmux.

Periodically runs a command in the console while temporarily clearing the screen content; it makes it easy to check differences between the output of two subsequent commands; it provides "diff" functionality to highlight the changing characters between outputs.

The classical Unix utility that provides a rolling display of top cpu using processes.

Sysdig captures system calls and events from the Linux kernel. You can save, filter, and analyze the data with our CLI or our desktop app. Think of sysdig as strace + tcpdump + htop + iftop + lsof + wireshark for your entire system.

A program to turn CLI tools into web applications; basically, it runs a command and starts a server so that the output can be displayed in a web page.

A shell tool from GNU for executing jobs in parallel using one or more computers; it can split the input and pipe it into commands in parallel.

A tool for managing the history; powerful visual search and execution of previous commands; history editing capabilities.