PocketTube: YouTube Subscription Manager is a Firefox extension designed to enhance the organization of YouTube subscriptions. This tool allows users to create collections of channels, making it easier to manage and navigate through various subscriptions. With features such as custom icons for collections and the ability to group channels, it offers a tailored experience for users looking to streamline their YouTube viewing.

The extension also provides functionality to filter videos by category and hide watched content, ensuring a more personalized feed. Users can auto-sync their collections across devices using Google Drive, making it accessible on Android, iOS, and other platforms. With its integration into the YouTube main page and the ability to order subscriptions by various criteria, PocketTube caters to users seeking a comprehensive solution for managing their YouTube experience.