2018 by Juergen Wothke (The source code can be found here.)
webGSF is a JavaScript/HTML5 port of kode54's GSF decoder a player for "Gameboy Sound Format" (based on mGBA).
Bring your own .minigsf/.gsf files by dropping them onto the page (you'll have to drop the .gsflib first - before dropping the song files that use it). Respective files can be found for example on modland.com.
The audio is directly calculated within JavaScript by running the mGBA emulator and then played using the WebAudio ScriptProcessorNode infrastructure.
This is one of about 30 music players that I have ported to the Web over the years. To hear them all in action visit my PlayMOD page
Please use the below controls to navigate between the songs: