spools is a utility for spotify power users to do all sorts of cool things for analytics, music discovery, and organization. you can download the desktop version below. but i'm working on a much more polished web-app version that i'll hopefully release soon.
you can download a very primative version below via google drive. you'll have to create your own spotify API cridentials to use it. and i have no documentation on how to use it. but if you have any questions you can email me via my about page. also, it only works on windows, may have unresolved bugs, and may require you to install python.