I have uploaded a preconfigured version of Groowiki to the download
section of the site. You can download, extract to c:\groowiki, start
the included Tomcat clicking on C:\groowiki\bin\startup.bat and then
opening the URL
http://localhost:8080.
It is preconfigured to use a local repository, any username and
password works with it.
You need Windows, and installed Java 6.
Peter