i use many web applications daily. for some, i like to have them as a separate taskbar icon and don't need the chrome address bar or anything at the top. this function will quickly open a given url in one of these chrome app windows

https://github.com/gangstanthony/PowerShell/blob/master/chromeapp.ps1

chromeapp reddit.com/chat

opens a new window and returns this (i can copy/paste this into the run prompt if i need to later)

chrome --app=http://reddit.com/chat

also, if you use the -createshortcut switch, it will create a shortcut for you in c:\temp (requires the create-shortcut function)

*edit: could be changed to work in edge, too

C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe --app=http://reddit.com/chat