http://www.facebook.com/Neobitz On Jeff's (NeoBitz) Facebook site you will find a link to the latest version of his NeoSoundBuilder tool
http://blastar.citavia.de Blastar's Neo Geo Programming Blog presents outstanding demos and a very useful Neo Geo graphic editor (NGFX)
http://www.ajworld.net/neogeodev
AJ's website offers a his 68k ASM library (freemlib), a great ASM programming tutorial and a lot of tools and information
http://unibios.free.fr
Razoola's legendary UniBios for Neo Geo AES / MVS / CD can be found at his website
http://furrtek.free.fr
Furrtek's (french) website with tons of technical informations about the Neo Geo systems