The article makes reference to Specctr [http://www.specctr.com http://www.specctr.com], which looks like an interesting tool. I hadn't heard of it before, but

The article makes reference to Specctr [http://www.specctr.com http://www.specctr.com], which looks like an interesting tool. I hadn't heard of it before, but it is one I will be taking a more detailed look at. Thanks for sharing.