Addr

Addr lets you read, take notes in context and share them with your friends. More than that: you can read a book with your friend’s annotations in context. Imagine a world with a single book being shared and annotated by millions of users. A digital book does not exist in itself, we all share the same copy of a digital file. With the digital book, two readers should have access to all annotations that have been taken in this book to enhance their own experience.