How to create window boundaries?

Hi, I used to have a program that let you set window boundaries. I think it was some Windows tweak tool, I don't remember. Does anyone know the program or how I can do this?

If anyone doesn't understand what I'm asking for, let me explain what I mean by "window boundaries". Setting boundaries so when a window is maximized it won't cover a certain side of the desktop. So for example: If you set a boundary so your windows won't cover 100 pixels on the right side of the screen, then you could put desktop icons there and you could still view them when you have maximized windows (because the windows don't cover the area).

Thanks.

No help here... that's alright I ended up finding a program that does what I want (different from the one I previously had.

Free Download Hawkeye ShellInit - Desktop Utilities Free Software

That one is new to me too. Thank you, I'll try it out.

I started using DesktopCoral instead of Hawkeye, it's great. Thank you.