Opening several records at the same time in a new window/tab is functionality I can no longer live without.

It’s really simple, yet powerful at the same time. ServiceNow should definitely include this option out of the box.
I was going to write the code myself, but luckily, someone had already done it!
Warning: The first time you try to use it, your browser might try to stop you!

Download from Share: Open in New Window
Opening multiple records from any list view requires multiple clicks usually. ‘Open In New Window‘ will help you open records from a list view quickly with a single click. Just select the records that you want to open on list view and click the new button from list choice action.
Note: This is meant primarily for non prod environments.