I didn't do the WASM port. It was started by our previous lead whitequark, and some more work done by a few others. It's not quite complete, but you can do some 3d modeling. Just might not be able to save...

> Just might not be able to save...

Oops, I did not read that before going ham in the editor. It seems that the files are stored inside the emscripten file system, so they are not lost. I could download my exported 'test.stl' with the following JavaScript code:

    var data = FS.readFile('test.stl');
    var blob = new Blob([data], { type: 'application/octet-stream' });
    var a = document.createElement('a');
    a.href = URL.createObjectURL(blob);
    a.download = 'test.stl';
    a.click();

PRs are welcome. ;-)

One thing worth noting, everything but the menus and popups is drawn with openGL. The text window uses GNU unifont which is a bitmap font. All the interactions are handled the same way as the desktop versions.