Zenity is described as 'Tool that allows you to display GTK dialog boxes in commandline and shell scripts' and is a Shell in the os & utilities category. There are more than 10 alternatives to Zenity for a variety of platforms, including Linux, Windows, Mac, BSD and Python apps. The best Zenity alternative is Yad, which is both free and Open Source. Other great apps like Zenity are Modern Message Box Generator, wxFormBuilder, easybashgui and KDialog.
Yad (yet another dialog) is a fork of Zenity with many improvements, such as custom buttons, additional dialogs, pop-up menu in notification icon and more. It's useful for creating quick and easy GUIs for shell and batch scripting.
Almost everyone thinks Yad is a great Zenity alternative.
Yad is the most popular Linux alternative to Zenity.
Yad is the most popular Open Source & free alternative to Zenity.
Generates a customizable "Task Dialog" box - a more modern version of the old Windows message box.'
Modern Message Box Generator is the most popular Windows alternative to Zenity.
wxWidgets is an excellent framework that enables the creation of multi-platform applications with and without a graphical user interface. There are several applications that help create dialogs visually, even so, some practical problems have led me to start the development of a...
wxFormBuilder is the most popular Mac alternative to Zenity.
Bash functions library for *BSD and GNU/Linux that aims to give simple GUI functions using yad, gtkdialog, kdialog, zenity, Xdialog, (c)dialog, whiptail or bash builtins depending on KDE or GNOME running or not, Yad/Gtkdialog/Xdialog installed or not and, eventually, X...
wxDev-C++ is an extension of Bloodshed Dev-C++ by Colin Laplace et. al. This program helps you to create dialogs and frames for wxWidgets visually using a form designer.
it work form shell command line
Xmessage displays a (GUI) window containing a message from the command line, a file, or standard input (from its man page). It is pretty basic and won't win any beauty contests, but it gets the job done and has quite a few handy options.
wxGlade is a GUI designer written in Python with the popular GUI toolkit wxPython, that helps you create wxWidgets/wxPython user interfaces. At the moment it can generate Python, C++, Perl, Lisp and XRC (wxWidgets' XML resources) code.
MessagePop is a simple application designed to help you convey a message to the computer user. The program allows you to specify the message text and the other parameters from the command line.
United States
Germany
EU
In case you only have to display a message, and do not want to need a large part of the gnome environment.