Domain tool for searching whats available

Hello, I have a keyword list of about 200 terms, I would like to find a tool that will allow me to create variations on those terms, for example the terms can either start or end with the terms but i need them mixed up. I need to cover .com, .info, .biz, .net etc....

Can anyone recommed a source to use to do the digging on available domains ?

thanks

Thanks godsfriend !!! will check it out, much appreciated