A mind map is a diagram used to represent words, ideas, tasks, or other items linked to and arranged radially around a central key word or idea.
Mind maps are an excellent way for online users to brainstorm, share ideas, and plan projects together. And since wikis revolve around collaboration on a central topic, wiki's and mindmaps complement each other and work great together.
Unfortunately, there is no product on the internet which combines wikis and mindmaps, however I think there is an easy fix to this.
Mindmeister, a popular online collaborative mindmap solution, offers an API for embedding their mindmaps on any 3rd party web server. The Mindmeister map editor is embedded with a simple form function. Here is the full code for embedding the map editer.
<form action="http://mindmeister.com/external/show" target="new" method="POST"
enctype="multipart/form-data">
MindMeister File: <input type="file" name="file[content]"/>
Id: <input type="text" name="file[id]" value="-1"/>
Name: <input type="text" name="file[name]" value="some map"/>
API Key: <input type="text" name="api_key" value="your_api_key"/>
Allow export: <input type="checkbox" name="file[allow_export]" />
</form>
Once embedded, these maps can be edited and saved without requiring the user to have an account on the Mindmeister server. All that's required is that the wiki administrator obtain a free API key from MindMeister.
Here is the Mindmeister API Homepage.
If we could use Mindmeister on our wiki sites, that would be really cool. :)