The linked "directly responsible" more or less meets my memory - MultiZilla first, Mozilla main later. The MultiZilla site of the time confirms it, the history

The linked "directly responsible" more or less meets my memory - MultiZilla first, Mozilla main later. The MultiZilla site of the time confirms it, the history links point to a 2001 start which would make 2002 in Mozilla itself reasonable. http://web.archive.org/web/20010603123052/http://multizilla.mozdev.org/index.html http://web.archive.org/web/20010603123052/http://multizilla....