Site building
www.anlucas.neocities.org/GifFiles
www.goblin-heart.net/sadgrl/projects/88x31-button-maker
www.webamp.org
WinAmp on the web
Art Related
www.flat2d.com/pc98.html
Cool software and a cool archive of PC-98 art
www.povray.org
Useful for making crusty looking renders in Blender.