Taskolio Webextension от Andrew Sutherland

This is an experimental client for the experimental window/browser tab/editor buffer bookmarking program at https://github.com/asutherland/taskolio. The interface currently requires use of hardware MIDI/DJ controllers and a separate node.js server to be running locally on your machine. Information about your tabs will be sent to the local server running on a hard-coded port including their titles.

The extension now also has the ability to "bookmark" specific DOM elements in a tab by their id, allowing the controller to assign a hardware button to push buttons/links in a tab. This is intended to support previous-track, play/pause, and next-track buttons in streaming music services. A session-persisted per-tab permission model is used, so that the node.js controller server is only able to cause clicks to occur on DOM elements identified by id's that the user has explicitly bookmarked via a context menu.

You probably only want to consider this if you want to hack on the project too.