Team Artail - Fan art gallery, fan fiction, music, sound clips and information on the games and cartoon. |
| The Green Hill Zone - Series history, game zone descriptions and screens, character descriptions, and multimedia. |
| NeoPortal Sonic - Offers screenshots of the games. |
| Shadow of a Hedgehog - Images, music, and resources. |
| The Sonic Center - Time Attack competitions and information. |
| Sonic Dream - Contains information, secrets and glitches on Sonic Adventure. Fan art and fiction is also available. |
| The Sonic Foundation - News, information, music, art, and fiction. |
| Sonic HQ - Contains information on the games, comics, cartoons, downloads, fan fiction, and music. |
| Sonic in Gr - Aimed at Greek Sonic players, though information is universal. Includes chat, cheats, and downloads. |
| Sonic Metropolis - Game secrets, FAQs, music, and message boards. |
| Sonic Oasis - Offers information, pictures, music, image galleries, and links. |
| Sonic Online 2 - Contains character profiles, history, and sprites. |
| The Sonic Stadium - News, information, forums, and chat. |
| Sonic the Hedgehog Online Fun and Games - Offers sprites, images, and flash games. |
| Sonic World - Background information on the games and cartoons. Offers MIDIs, fan art and other creations, and forum. |
| Sonic X Network - Message board with off-topic, console, and character discussions. |
| Sonic Zone - Character bios and game data. |
| Sonicology - Prototypes, hacks, cheats, glitches and zone data. |
| Spacecolony ARK - Offers wallpaper, information, and screenshots. |
