This question about Installation of Foswiki: Answered
Can I install foswiki on sourceforge.net?
This is probably a question that should be asked of sourceforge support. Looking at the list of List of Hosted Apps on sourceforge, the only wiki listed is MediaWiki. Some of their other hosted packages support perl, so it really depends upon what they are willing to do, and if there are other missing dependencies.
-- GeorgeClark - 02 Dec 2011