Freenet 0.3 has been released. Improvements include encryption, subspaces, improved datastore behaviour, and a whole host of architectural and reliability improvements. This is what everyone has been waiting for!
Visit Yuppers Pub for more info.
Or go to the Freenet Quick Start page to download and install. For some sample keys you can take a look at Steve's Key Index.
A Perl client is available HERE so you can add Freenet access to a web page, or in Windows Active State has ActivePerl, a FREE Perl interpreter, easy install. All you do is type the name of the perl program at a DOS window. Perl programs are easy to change, and docs come with the download.
Other Clients are being developed and are available HERE.