Fasttracker II by Fredrik “Mr. H” Huss and Magnus “Vogue” Högdahl (Triton, 1994–1999).
This is ft2-clone v2.24 by Olav “8bitbubsy” Sørensen, whose replayer is ported directly from the original FT2 source code. It is compiled to WebAssembly with only a handful of browser adaptations (single-threaded, frames paced by the display, files kept in browser storage).
Drop modules, instruments or samples anywhere on the page to load them. Saved files land in the browser's storage: use Files to download them. Browser shortcuts such as ⌘W/Ctrl+W can't be captured.
Code: ft2-clone, BSD 3-Clause, © 2016–2026 Olav Sørensen; SDL 2 (zlib), Emscripten and musl (MIT), minimp3, miniflac and minivorbis under their own licenses. MIDI input is not available in this build.
Graphics by Magnus “Vogue” Högdahl, some hand-edited by Olav Sørensen, used unmodified under CC BY-NC-SA 4.0: this build may only be shared for non-commercial purposes. The About screen logo and the MIDI logo are by Olav Sørensen (BSD 3-Clause).
Demo songs (public domain): “Bit Loader” and “Computer_Adventures!” by Drozerix, “Crusaders” by JAM. Full license texts: licenses/.