This may not be new for many of you, but I just added a link to my list of resources on the right and wanted to highlight it.
D. L. Ashliman's collected folklore and fairy tale texts are available here. When researching folk texts I often find that by googling the title of a folk tale it will bring me to this resource, but having gone the back door way so many times, I didn't even realize until reader Nectar Vam sent me the link that there's a page that has all the folktales, sorted out by categories! This is super helpful for looking up variants of a tale online. You can read versions of standard fairy tales like Cinderella or Beauty and the Beast from all over the world, as well as fables and legends. There are humorous categories like Clothes Make the Man (which doesn't actually contain "Emperor's New Clothes," that's a whole separate category), or creepy ones like Haunted by the Ghost of a Murdered Child. There's so much to explore, it's a great free resource!