Hi Bruce, the adware-free alternative to kazaa is kazaa lite ( http://www.kazaalite.tk ) they state : " Kazaa Lite is not a different program, it's the same program, just without all the additional software. We don't have any source code of the program. That makes is almost impossible to make big changes to the program or add new features. Nevertheless, we did succeed in making big improvements to the program by modifying some of it's machine-code, adding plugins and external utilities. " you can ask your question on their forum : http://www.klboard.ath.cx I did a forumwide search on "source code" and nothing interesting came up. Cheers, Damien COLA -----Original Message----- has anyone ever seen an open source client for kazaa, or any information that could be used to write a client that would access the kazaa network. i'm interested in writing an app that could crawl/spider across file sharing networks.