Sonic Stuff Research Group
From Sonic Retro
The Sonic Stuff Research Group (aka SSRG) has long been considered the birthplace of the Sonic hacking scene. Previously maintained by Andy Wolan on Emulation Zone, it is now ran by JohnnyUK and Ultima on Shadowsoft Games' server. Currently, it hosts a variety of hacks, utilities and guides, as well as the current incarnation of Secrets of Sonic the Hedgehog and the Sonic Official Art Archive.