This is question which I have been thinking about recently when playing again Dragonborn DLC of Skyrim. Since I came to follow TES with Morrowind I have been under impression there's only one - http://www.imperial-library.info/content/daedric-alphabet we have seen in many titles and which words are written in English. But now I have been forced to change my thoughts about it because I payed attention while adventuring in Apocrypha: http://img2.wikia.nocookie.net/__cb20130305121327/elderscrolls/images/d/d2/Blackbooktext.jpg which grants you knowledge are not written in Daedric we are familiar with from the previous games. So the question is what kind of form of daedric language/alphabet/dialect is used in those books and how many other Daedric alphabets, languages or dialects does exist?