If you've upgraded to Windows 8, you've probably noticed the somewhat bloated borders around the edge of every window. Tiny Windows Borders is a simple tool that will help you shrink them.
Tiny Windows Borders is portable, so you can just download it, start it up, set your window borders to as thin (or thick) as you want, save your changes and then delete the program. It's a nice little tweak that makes Windows 8 look a bit better.
Tiny Windows Borders for Windows 8 [WinAero]