Read original post by Doug Rathbone at Diary of a Ninja
After developing Windows Phone 7 applications in my spare time over the last year, I've collected an assortment of tools that make developing apps so much easier than when I first jumped in to Silverlight/Windows Phone 7 development. I only wish I'd know about them all when I first started down the Windows Phone 7 path. Whether you are just starting out or have been developing Windows Phone 7 apps for a while now, there’s something here for everyone.