Islam currently seems to lack a true analogue to Protestantism or a Reformation, and IMO it's long overdue for one. The closest thing I can think of would be Quranism, which involves belief in the Quran exclusively and rejection of the hadith (at the expense of such characteristic practices as praying 5 times a day, the standard Shahada, gender segregation, or hijab), but presently, Quranists are small in number, seldom taken seriously, and widely demeaned as "fake Muslims" following an illegitimate fringe offbrand version of the religion (with some even getting arrested in countries like Saudi Arabia).