Domain Availability Checker is a free tool in the WebTool.Live. It allows you to enter up to 20 domain names to check the availability of them.
The tool can check all new extensions, such as .news, .tech, .live, and much more. If you are wondering should to use these new domain extensions, then we would say there is not much different between these extensions and general extensions in SEO. Still not convinced yet? Read this article.