Kuadro is an image viewer that allows you to open as many windows as you want, lay them out as you need them and store those layouts for later.
It was designed to stay out of your way, and work around you.
License Information: Kuadro is released AS IS for free for any use including commercial usage. The only restriction is that you cannot redistribute Kuadro as your own. If you find it useful please consider a donation to pay for hosting costs
For more Info visit http://kruelgames.com/tools/kuadro
Note: This is the OSX build, for the windows build go to https://gumroad.com/l/kuadro_win