What is the name of this moveable multiselect list? [duplicate]

This is killing me. I am trying to find out what is the name of this UI component that has two multiselect controls, where the left is a list of available items and the right is the list of selected items, with some buttons for moving in-between.

I have a need for a rather large list of available selections and the user needs to also be able to see those selections. I am open to alternative components that can accomplish the same goal, but since the number of items selected will be rather large, the "tag" approach seen with multiselect components like react-select are not optimal.