If you are looking to register a new domain or you have a list of options you are considering, check out this free and easy bulk domain checker.
It does exactly what it says: Give it a list domain names (each in the new line) and it will quickly show you if any of them is available. Then you can download the list of available domains: No need to scroll the list!
There's no need to register or opt-in. It's always neat to have free tools like that!