Notepad++ (Windows, 2003) / gedit (GNOME, 1998) / kwrite/kate (KDE, 2001) all existed in 2008 and are totally fine basic text editors for source code. I remember editing PHP in a more obscure editor (SciTE, 1999) on Windows in the early 2000s.
gvim (for GTK/Gnome) is an official part of vim!