A local-first multiview workspace: up to four browser tabs or windows side by side on one screen, with one of them chosen as the audio source.
No stream URL, no API key, no account, no configuration file. Every source is picked through the browser's own screen-sharing panel, which is the shortest route a plain website has to this without asking anyone to install an extension. Presets cover two, three and four sources, tiles can be dragged into a different order, and the keyboard handles the rest: numbers to switch the audio, F for fullscreen.
Nothing leaves the machine. There is no upload endpoint, no recorder, no media proxy, no analytics and no database: the captured stream lives in the browser's memory and the session ends when the page is refreshed. Even the optional automatic naming, which reads a single frame to guess what a source is, runs locally.
It is deliberately explicit about what it will not do. It does not fetch, proxy, record or host media, and it does not work around DRM, paywalls or access controls. Protected players are expected to stay black, and the documentation says so instead of promising otherwise.
Open source under MIT. Try it in the browser, or run it on your own machine:
Experimental public beta. Only capture what you are authorized to view and display.