It's been a long, long time since we talked about the Windows app Sizer, recently rewritten to be more compatible with Windows 10 apps. It's almost embarrassing given the usefulness of this little utility. With the press of a few keyboard buttons, you can reconfigure the size of apps on your screen to any dimensions you want, giving you even more control over how your apps appear than Windows 10's default commands.
Screenshot: David Murphy (Sizer)
(Note: Everyone should memorise Windows' default commands for shuffling apps around: Windows Key+Left Arrow or Right Arrow for maximizing an app's window on the left or right side or your screen (a godsend for ultrawide monitors); Windows Key+Up Arrow for maximizing your window to fill your entire screen; Windows Key+Down Arrow for shrinking a window or minimising it entirely; et cetera.)
Screenshot: David Murphy
Sizer is handy because it allows you to assign specific dimensions and positions to hotkeys. Depending on how creative you want to get, you can create a hotkey that automatically moves an app to the center of your monitor at a size of exactly 1080p - or even off to a corner, if your monitor is big enough and you want to watch some YouTube while you work. If you prefer one window configuration for web browsing and one for coding (or gaming), Sizer makes it easy to send your apps flying to exactly where you want them (at the perfect height and width, too).
The utility is also great for multi-monitor setups, too, since you can now customise keyboard commands to dictate window size and on which monitor an app should appear. And if you're not big on memorising hotkeys, all you have to do is right-click, the border of any active window to access Sizer's selections — a menu you can also fully customise with your own sizing configurations, depending on how much time you want to spend on building the perfect Windows looks.