Vimwiki is a personal wiki for Vim

On the other hand there are other ways to distribute vim plugins available: pathogen or vundle. Plus github.com, where one can find vast majority of vim plugins as a separate repos or united under vim-scripts's mirror. Not to mention there is an easy way to download zipped vimwiki sources which is practically the same as vimwiki-2-1.zip we have at "Downloads" tab.
So meet https://github.com/vimwiki/vimwiki

Description

Hosted on vim scripts too.
Vimwiki is a personal wiki for Vim -- a number of linked text files that have their own syntax highlighting.
With vimwiki you can

• organize notes and ideas
• manage todo-lists
• write documentation

Screenshots

Quick start

Press <Leader>ww (this is usually \ww) to go to your index wiki file. By default it is located in:

~/vimwiki/index.wiki

Feed it with the following example:

= My knowledge base =
    * My Urgent Tasks -- things to be done _yesterday_!!!
    * Project Gutenberg -- good books are power.
    * Scratch Pad -- various temporary stuff.

Place your cursor on 'Tasks' and press Enter to create a link. Once pressed, 'Tasks' will become '[[Tasks]]' -- a vimwiki link. Press Enter again to open it. Edit the file, save it, and then press Backspace to jump back to your index.
A vimwiki link can be constructed from more than one word. Just visually select the words to be linked and press Enter. Try it with 'Project Gutenberg'. The result should look something like:

= My knowledge base =
    * [[Tasks]] -- things to be done _yesterday_!!!
    * [[Project Gutenberg]] -- good books are power.
    * Scratchpad -- various temporary stuff.

For the various options see :h vimwiki-options.

from  http://code.google.com/p/vimwiki/