DomainWhoIs is a program that can search for Who Is information about web domains using a number of different Who Is lookup servers. All you have to do is select your lookup server and enter your web domain you want to search information about and click Submit. All information is then presented directly to you within the program.
Huge amount of different WhoIs servers to search on meaning that you can use many different who is server from around the world. There does not seem to be many other programs out there that offer this range of who is servers.