How to know what HTML5 tags can I use?

While working with HTML5, its quite common to get a doubt about what tags can we use and which tags are implemented/supported by which browsers. Isn’t it cool if we have a tool to provide tag name and get the supported browsers along with their versions? Such tool is Can I Use

caniuse.com is very handy tool to HTML5 developers to check the new tags based on the browsers they mainly target until HTML5 is finalized.