AlacrittyW
Alacritty

Alacritty is a free and open-source GPU accelerated terminal emulator for Linux, BSD, macOS and Windows focused on performance and simplicity. Consequently, it does not support tabs or splits and is configured by editing a text file. It is written in Rust and uses OpenGL.

GNOME TerminatorW
GNOME Terminator

GNOME Terminator is an free and open-source terminal emulator for GNU/Linux programmed in Python. The goal of the project is to produce a useful tool for arranging terminals. It is inspired by programs such as gnome-multi-term, quadkonsole, etc. In that the main focus is arranging terminals in grids. Terminator exists in default repositories for Arch, Debian/Ubuntu, Fedora, OpenSUSE, Gentoo, Snap, FreeBSD. In 2017 took second place in voting at opensource.com, after Gnome Terminal. Terminator is not a fork of GNOME Terminal, It is a development from scratch of Chris Jones, entirely in Python, but much of the behavior of Terminator is based on GNOME Terminal:... Terminator began by copying code from the vte-demo.py in the vte widget package, and the gedit terminal plugin.

Grace (plotting tool)W
Grace (plotting tool)

Grace is a free WYSIWYG 2D graph plotting tool, for Unix-like operating systems. The package name stands for "GRaphing, Advanced Computation and Exploration of data." Grace uses the X Window System and Motif for its GUI. It has been ported to VMS, OS/2, and Windows 9*/NT/2000/XP. In 1996, Linux Journal described Xmgr as one of the two most prominent graphing packages for Linux.

MrxvtW
Mrxvt

The mrxvt program is a terminal emulator for X Window System. It provides DEC VT102 compatible terminals.

NEditW
NEdit

NEdit, the Nirvana editor, is a text editor and source code editor for the X Window System. It has an interface similar to text editors on Microsoft Windows and Macintosh, rather than to older UNIX editors like Emacs. It was initially developed by Mark Edel for Fermilab and released under a very restrictive licence, but today it is distributed under the less restrictive GNU General Public License and is developed as an independent open-source project by a team of developers. Nedit was also distributed with the IRIX operating system.

PDFeditW
PDFedit

PDFedit is a free PDF editor for Unix-like operating systems. It does not support editing protected or encrypted PDF files or word processor-style text manipulation, however.

Plan (calendar program)W
Plan (calendar program)

plan is a calendar and day planner program for the X Window System based on the Motif widget set. plan is free software released under a custom permissive license.

RxvtW
Rxvt

rxvt is a terminal emulator for the X Window System, and in the form of a Cygwin port, for Windows.

Terminator (terminal emulator)W
Terminator (terminal emulator)

Terminator is an open-source terminal emulator programmed in Java. It is available on Microsoft Windows, macOS, Linux and other Unix systems that use the X Window System. Terminator will run on any modern POSIX system running Java 6 or later. Terminator is licensed under the GNU General Public License version 2.

WilyW
Wily

Wily is a text editor created by Gary Capell for the X Window System. It is based on Acme, the mouse-centric editing environment for the Plan 9 operating system.

XbiffW
Xbiff

xbiff is a small utility for the X Window System that shows a mailbox with its flag raised whenever the user has new e-mail. It is included in almost every X Window System.

XcopilotW
Xcopilot

Xcopilot is a Palm Pilot emulator that runs under Unix/X11.

XfigW
Xfig

Xfig is a free and open-source vector graphics editor which runs under the X Window System on most UNIX-compatible platforms.

XkillW
Xkill

Xkill is a utility program distributed with the X Window System that instructs the X server to forcefully terminate its connection to a client, thus "killing" the client. When run with no command line arguments, the program displays a special cursor and displays a message such asSelect the window whose client you wish to kill with button 1 ...

XMuleW
XMule

xMule — the X11 Mule — is a client for the eDonkey peer-to-peer file sharing network, originally intended to bring it to virtually all the major Unix platforms, with a particular emphasis on Linux. The project is no longer being developed, and users of xMule are encouraged to move to the BitTorrent network or use aMule in the official xMule website.

XpdfW
Xpdf

Xpdf is a free and open-source PDF viewer for operating systems supported by the Qt toolkit. Versions prior to 4.00 were written for the X Window System and Motif.

XScreenSaverW
XScreenSaver

XScreenSaver is a free and open-source collection of 240+ screensavers for Unix, macOS, iOS and Android operating systems. It was created by Jamie Zawinski in 1992 and is still maintained by him, with new releases coming out several times a year.

XsnowW
Xsnow

Xsnow is a software application that was originally created as a virtual greeting card for Macintosh systems in 1984. In 1993, the concept was ported to the X Window System as Xsnow, and was included on a number of Linux distributions in the late 1990s.

XtermW
Xterm

In computing, xterm is the standard terminal emulator for the X Window System. A user can have many different invocations of xterm running at once on the same display, each of which provides independent input/output for the process running in it.