The Sonic News Network is affiliated with several wikis on Wikia. It is a member of the Wikia Video Games network.
Sonic Fanon Wiki
Sonic Fanon Wiki is the place to go if you have any sort of fan-works! Instead of posting them in main-space here (where they don't belong), place them at the Sonic Fanon Wiki for all of the hard-working fanon writers to see and praise. The Sonic Fanon Wiki started in June 2008, and currently consists of over 12,000 articles!
Sonic the Comic Wiki
Sonic the Comic Wiki is for all things related to Sonic the Comic, the British comic published by Fleetway Editions. The Sonic the Comic Wiki started in April 2009, following the closure of a previous STC wiki hosted by Pokécharms. It currently consists of over 3,000 articles!
Mobius Encyclopaedia is a collaborative project to create the most definitive, accurate, and accessible encyclopedia and reference for everything related to the Archie Sonic the Hedgehog universe. Mobius Encyclopaedia started in October 2007, and currently consists of over 1,700 articles!
For more information, please see Mobius Encyclopaedia:About.
Sega Wiki is an encyclopedic project to create an accurate and detailed database for Sega gaming systems, characters, notable employees, and corporate history. It also has a section for writing guides and reviews for Sega-related games. Sega Wiki was started on August 2006, and currently consists of over 510 articles!
For more information, please see Sega Wiki:About.
German Sonic Wiki
Dutch Sonic Wiki
Spanish Sonic Wiki
Polish Sonic Wiki
French Sonic Wiki
Portuguese Sonic Wiki
Turkish Sonic Wiki
ChrisCrossMedia is a YouTube channel that does many giveaways, skits, walkthroughs, and other videos. During November 2011, ChrisCrossMedia did a Sonic-themed month, where they affiliated with the Sonic News Network.