Mockupea - Mockupea is an online tool for creating 3d book mockups with a lot of features.
Pressbooks - Create books: print and ebooks
Stackoverflow '90s - Bring back '90s to Stackoverflow with this extension
Meminto Stories - Meminto Stories makes it easy for anyone to become the author of their own book.
Box Shadow Generator - Generating CSS3 multilayer box-shadow has never been easier.
Impressed Photo Books - Create a photo book in minutes. Starting at $22.