This tool is a simple solution for extracting domains from list of URLs.
I used to use this kind of service as my everyday SEO routine. I had to google them everytime, because I didn’t want to bookmark any of them: some of them were slow, another ones – uncomfortable to use. Suddenly I asked myself – why shouldn’t I wrote my own service. And… here it is.
I have added some (as I think) useful options, such as convertion into lower case, removing “www” subdomains and removing duplicating domains, and I’ve turned them on by default. If you don’t need them – you can uncheck their checkboxes easily.