Fusee Launcher, in a browser!
This 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.
This is also a fork of web-fusee-launcher, which I fixed up a bit, added hekate 5 and 4, and did some CSS stuff.
Either use a web server to host the files (must be on https, because of the fact that WebUSB is new technology and therefore has a lot of security restrictions) or you can try it on github pages.