A simple *NIX permissions mask calculator for Windows.
Getting the right octal mask for permissions on any *NIX system was always annoying for me, I decided to write a simple calculator to get immediately a visual representation from a mask and be able to create a mask with a few checkboxes clicks.
Released under the terms of the MIT License (http://opensource.org/licenses/MIT).
Something that runs a .NET framework implementation with a working System.Windows.Forms namespace.
Official .NET of course or Mono (I think) should do the trick. The VS2012 project targets .NET 4.0 Client Profile.