Fusee Launcher, in a browser!
This is a fork of web-fusee-launcher, which is a port of fusee-launcher to JavaScript using WebUSB. This has been mildly tested and appears to work on Linux, Android (unrooted), OSX and ChromeOS. Today, this only works on Chrome because only Chrome implements WebUSB. It also does NOT work on Windows because the WebUSB Windows implementation does not allow sending the required USB packet.