StreamStack

Watch multiple video streams in one organized view

StreamStack is a Chrome extension that allows users to watch multiple live streams simultaneously in a single organized view. It detects HLS video streams (.m3u8) playing in open browser tabs and displays them together in a customizable grid layout. Core features: Automatically detects HLS streams across open tabs using the webRequest API Displays multiple streams in 2×1, 2×2, or spotlight layouts Supports stream swapping, fullscreen, and per-stream controls One-time license purchase ($9.99) unlocked via a license key entered in the popup Permissions used: tabs — to enumerate open tabs and find active video streams webRequest — to monitor network requests and detect .m3u8 stream URLs storage — to persist the user's license key across sessions host_permissions — required for webRequest to observe requests across sites The extension does not collect, transmit, or store any user data. License validation is performed entirely client-side using the Web Crypto API. No external servers are contacted by the extension itself. Extension does not provide any streams, only identifies valid stream formats in open tabs.