Swiki (Simple Wiki, or Squeak Wiki, or even, Stupid Wiki) is an implementation (perhaps, interpretation) of Wiki implemented in Squeak on top of the Pluggable Web Server by Mark Guzdial. Swiki is an example included with the Pluggable Web Server..
Description of Swiki and the Pluggable Web Server are available at pbl.cc.gatech.edu 
. (archive.org: web.archive.org )
Swiki now has a 'younger, more muscular little brother' - Comanche. Information is available at the site above, or at wiki.squeak.org or at www.frivschool.org
There is also another Simple Wiki written in Free Pascal is located here:
z505.com
See original on c2.com