Warning: Still a work in progress.
This is an updated version of Command Prompt Youtube. It features an OAuth2 login via Google to view your current subscriptions. You can create custom feeds of various YouTube authors to get fresh new content every day. You can create video collections to categorize and save your favorite videos.
As soon as a new Youtube API is released, it will (hopefully) allow the ability to transfer over your favorite feeds/collections to your Youtube account.