iVPN is an application that makes use of the standards based PPTP and L2TP VPN server installed with Mac OS X. This VPN server is usually only available on Mac OS X Server and configured through the Server Admin application. iVPN makes it possible to use the same server utility on the client version of Mac OS X.
iDNS is a configuration tool that makes setting up your own DNS server as simple as possible. iDNS uses the de facto standard DNS server, BIND, which comes installed on every Mac. The tool to configure this DNS server is not included by Apple on standard Mac OS X installations, only Mac OS X Server. But what if you don't want to buy Apple's expensive Server operating system just for a DNS server? This is the beauty of iDNS!