This is the Swank Documentation Wiki.
What is Swank? Read the Overview.
Short Answer: Swank is a Structured Wiki.
A wiki is a living document, which may be continually edited and updated by a group of people.
Having structure means your document is not limited to unstructured text. You can also have database fields, relations, and groups of documents with similar structures.
Need a wiki? That's the default structure.
Need a blog? That's just a wiki with dated entries.
Need comments on your pages? Those are just pages which are attached to other pages.
Need a user directory? Those are wiki pages with entries for name, email, etc.
Need a calendar? Events are just wiki pages organized by date and time.
How about a todo list? Just orgranize your wiki pages by priority and status.
Something else? Write your template and script it, all from within the wiki.