A new Breslov booklet which catalogs all the Sifrei Breslev has recently been released. It discusses what each book is about, who wrote it and when. The list includes everythign from Likutei Moharan to very unknown Breslov seforim by little known authors. The compiler of the booklet says in the introduction that this list is only from writers who have passed away and there are still many Seforim from authors who are alive that are not on the list! You can view the PDF below and download it here