title_body: Are there good ebook management tools available for free? I have a collection of e-books and I am looking for a way to manage it from my operating system. What are the programs to manage e-books available for free? I use both Linux and Windows OS, can you suggest some good software?
upvoted_answer: Calibre is a free and open source e-book library management application available. You can download from here which is available for all operating systems.
  
  Adobe Digital Editions is also one of the e-book manager by Adobe. You can access it from here.
  
  Alfa Ebooks Manager features a lot of templates and options for library vizualization. Besides, it allows to update book data from multiple web sources (like Amazon, Google Books, Barnes &amp; Nobel, etc). It's also good at file management and metadata extraction. You can download it from here.
  
  Delicious Library's a bit different. Actually it's a software not just for books but for managing all stuff at your home. It's greates feature - entering books via webcam shot (it recognizes ISBN code). This feature makes Delicious Library the best software for collecting paper books. You can see the details from here.
  
  And if you are a mac user Delicious Library is the best e-book manager but unfortunately it's not free. Second priority I will give to Alfa eBooks Manager.
  
  Hope it will help!