Switzerland is a tool which will will spot IP packets which are forged or modified between clients, inform you, and give you copies of the modified packets. It is for testing networks, ISPs and firewalls, and was developed by the Electronic Frontier Foundation. Is your ISP interfering with your BitTorrent connections? Cutting off your VOIP calls? Undermining the principles of network neutrality? In order to answer those questions, concerned Internet users need tools to test their Internet connections and gather evidence about ISP interference practices. .....(free).....