We've had a couple questions about what tools we used to make Professional Burglar, so I figured I may as well blog about it.
Visual Studio 2010
XNA Game studio
Windows Phone 7 SDK
Phat Games Engine/Game Editor - A .net based game engine and game editor. We are considering open sourcing this in the future once it becomes more mature (I'll probably post more on this in a bit).
We will be using Monotouch for the iPhone version of the game and are evaluating Monodroid for the android version.
Inkscape - an open source vector drawing utility.
Paint.Net - A freely available raster drawing utility.