This page is a list of other Wikis and sites that are about a subject similar to Goat City's. You can ask if your Wiki can be added to this list, just ask on the Talk Page.
The Fish Jumpers Wiki is a neat little Pokemon site and Forum I suggest you visit if it frustrates you too much that Pokemon isn't allowed here. However, it's quite small, and the subject isn't something very many people know about, making it hard to contribute sometimes.
The One Piece Adventure Wiki is the best One Piece oriented-roleplay Wiki I've seen so far. It has the potential to be really great, it just needs more people.
As the name suggests it is a roleplaying wiki. However it doesn't just focus on just one topic to roleplay. It focuses on pretty much everything, including events in history. It's set up pretty well, it just needs a few good rolelayers to join and help get it started.
It should be obvious that this is a roleplaying wiki based on Cartoon Network shows. It is just beginning but it has potential to be good.