From the DepSpid website:

DepSpid is still under development, as is PerlBOINC (PerlBOINC is an attempt to implement the BOINC server system in Perl programming language). The DepSpid application currently runs under windows only. There may be a linux application sometime in the future but this is not sure yet.

DepSpid is a distributed type of a web crawler (like the ones used by search engines) and has two major goals:

1st: Build up a database containing the dependencies between individual web sites and groups of web sites.
2nd: Collect statistical data about the structure of the web.

All information collected by the spider will be made publically available.