if its already open, show the existing application instead of opening another one
9032
What is the correct way to create a single-instance WPF application?
106177
Create a '.desktop' shortcut for 'Show Applications' on Ubuntu 18.04
118250
Launch app only if not already open
65079
How can I backup my programs/applications, so that after I reinstall a new one, I can still use the backup-ed ones?
92803
Find the default application for a certain extension
84345
How can I tell if another instance of my program is already running?
86312
How do I get an application to appear as a choice in update-alternatives?
96480
How can I add a new application to the Open With menu?
25842
How to remove application from recent application list?
108006
Run multiple instance of any windows application
67998
How can I show the "Open with" file dialog?
53802
How do I remove duplicate "Open With" context menu items in Finder.app?
110636
Using Intent in an Android application to show another activity
1899
How can I modify the list of Applications under 'Open With...'?
115302
how to do a Testing on an Already Installed Android application using Appium + Selenium ?
91095
How to install 2 versions of the same application on iOS?
96096
How to add new application to run from command prompt