hackable
This is a wiki in which every page is a script, run in a more-or-less normal GNU/Linux environment (protected by plash). The actual engine just supports running scripts in a restricted environment; everything you see (the layout, the wiki syntax, everything) is actually supported by scripts written into the wiki, and editable by anyone!
It also has wikisyntax, although pages using this syntax are really just scripts for the ".wiki" program, which is really just an implementation of WikiCreole. Like everything else, .wiki can be edited by anyone!
The source for Hackiki itself is available at https://codu.org/projects/hackiki/hg/ . The filesystem is available at http://hackiki.codu.org/fs/ (and, of course, here). Feel free to poke around! If you break something, please revert it with the administration interface (see link below). If you don't revert it, somebody else will, so don't go thinking you're a 1337 hax0r because you can edit a wiki :)
All content on Hackiki is distributed under the (unmodifiable) license in license unless otherwise specified. By editing Hackiki without specifying another license, you are agreeing to license your edits as such.