http://www.granthinkson.com/2007/11/08/announcing-pistachio-wpf-resource-visualizer/ 

I know I have blogged on this before… But im using this app right now and its saving me a load of work.

Let’s say you get a project handed to you that has a mess of unused resources… You arent familiar with the resources that are being used much less the ones that arent being used and you are absolutely confident that there is no code that will consume the resources at runtime…

Pistachio let’s you open a csproj file and it iterates through and tells you which resources are being used and which ones are not.

Even better… it tells you where the resources are being used when you click the twirly arrow next to it.

Screenshot determining IsUsed

Screenshot of resource usage