Went to go download the free trial, realised it was on sale and just bought it, it's a lifetime license as well.
Website blurb:
DisplayFusion will make your multi-monitor life much easier! With powerful features like Multi-Monitor Taskbars, TitleBar Buttons and fully customizable HotKeys, DisplayFusion will make managing your multiple monitors easy.
+1 for Multi-Monitor Taskbars (only showing the programs open on that monitor) and the little icon that moves the current progarm/page to other monitors