Home What's new? Reviews Shop Support

Book Organizing Software - organize your books by ISBN

Automatically download book details by ISBNLike author, title, publisher, genres, subjects & cover art.
Just search our huge online book database ... ... by ISBN or by author & title.

For phones/tablets

Mobile app for iOS & Android

  • Fast and slick mobile app
  • Install on multiple phones/tablets
  • All data stored on your device
  • Sync data to CLZ Cloud (optional)
  • Built-in camera barcode scanner

For computers

Web-app for Windows and macOS

  • Easy to use online software
  • Login and use from any computer
  • All data stored in the CLZ Cloud
  • Automatic updates & backups
  • Free CLZ Barry barcode scanner app

For Windows only

Download for Windows

  • For advanced Windows users only!
  • Install on one Windows PC
  • Manage your own data & image files
  • Sync data to CLZ Cloud (optional)
  • Free CLZ Barry barcode scanner app

Buy them together and get a discount

CLZ Books
1 year
Book Collector
1 year
Book Connect
1 year
USD $0.00
USD $0.00
save USD $0.00

Use the free CLZ Cloud service to:

  • Synchronize your book database between the desktop software, mobile apps and the Connect web-app.
  • View your list online and share it with friends and family.
  • Always have an online backup of your book database.

Latest software updates

Reviews from customers

September 23, 2021
THE book organization app you want
CLZ Books is THE book organization app you want and need in your life. I downloaded at least 10 apps recently, trying to organize my bookcases. I deleted them all except for CLZ Books. The support is quick and precise. The amount of customization and ease of use simply rose above the competition, and quite beautifully too. — Trinity Pierce on CLZ Books
September 20, 2021
Like a Personal librarian, great support!
I have been in the process of moving house and clearing out a family storage unit, thrilled with the books I’m finding, remembering and hoping to organize them all into a great library. I was seriously thinking of hiring a librarian to help me with all this when I found this fabulous app. I am able to seamlessly add volumes by isbn numbers and have manually added obscure volumes, photographing the covers and noting their particular histories.
I have been so eager with the newly discovered app, trying to get up to speed, I quickly asked support for some features that I subsequently discovered on my own. I was pleased to get an equally quick answer to my query— how to print out my lists— and can’t wait to do more. I may still hire someone to help me but with this app I am assured that even a student will be able to do a thorough, professional organizing of my library.
Bravo! Six stars! — intensia (USA) on CLZ Books
September 15, 2021
Perfect for the classroom!
I love this app! I have been a teacher for 29 years and have been trying to keep track of all of my classroom books. I have over 1,000 children’s books that are now organized nicely with in this app. I love the features of being able to tag the book with key words for future searches. Uploading books is easy and quick. — WileyMom3 (USA) on CLZ Books
July 28, 2021
Keeps me organized
Super easy to use can hold over 10,000 books and helps keep them organized. Love it!!! — Bear Star on CLZ Books
July 08, 2021
Love this app
I love this app and have been using it since its inception years ago. It's a great ways to organize and track all the books I buy and read. It has evolved a lot over the years and is continually getting better. The developers are very attentive to detail and very responsive with support and even suggestions. — John Barber on CLZ Books
July 01, 2021
Love this app!
I use CLZ books to manage my quilt books library. It helps me avoid buying duplicates which is good for my wallet. It’s also easy to add new purchases to the collection. Thank you, CLZ, for keeping me organized!! — JCquilter on CLZ Books
June 02, 2021
Great application
Another great application to keep your collections organised and prevent duplication when shopping. Having a large eBook collection that I manage through Calibre its great to be able to import a Calibre export and so have a fully portable view of all of my books with minimum maintenance by myself. I also have the Music Collector software which gives me a similar experience with physical and digital music. — Jason Hilton on CLZ Books
May 27, 2021
Perfect for Organizers!
I love to organize and as a homeschool mom I have nearly 1,000 books. Keeping them organized would be such a chore but this app makes it so easy! I love being able to scan the ISBN of a book to add it to my booklist. And pro tip: if you have lots of older books with no barcode, I’ve found the fastest way to enter them is to go to the keyboard for typing it in, and then click on my microphone and quickly say the numbers. Works great! — GoodHoll on CLZ Books
May 21, 2021
Best book catalogging tool
Love this app for keeping my library of books on record and well organized. No more duplicates which can be frustrating as well as expensive. I appreciate knowing my database is available to me on my PC and cell phone via the cloud, with no worries about maximum size. I’ve had this software for years and have enjoyed watching the developers continue to expand and improve its capabilities and design for ease of use. They’re always available and very prompt with functional as well as technical issues. I look forward to the future knowing we can rely on their growth and continuance. — halftracker on CLZ Books
March 16, 2021
Awesome app
Great app for organizing my books. — Amanda Tess on CLZ Books
February 23, 2021
I love it!
It is helping me to organize my cookbook collection in record time. I read about it in an article regarding the woman who holds the Guiness Book of World Records for largest cookbook collection. I figured if it worked for her 7,000 cookbooks it would work for mine too! — Carol Baker on CLZ Books
January 01, 2021
I use Book collector almost every day!
Dear Alwin and all at CLZ,
Thank you so much for all you have done to keep this amazing program going! 2020 has been so difficult and having access to organizing my books has been one of those pleasures that bring peace in chaos. I’m in the USA, so you can imagine…no don’t, it’s not worth it yet.
Seeing your Christmas card made me smile and cry at the same time. I hope the celebrations you have for your 20th year “make up party” are ROCKIN’!! I’m not sure how long I’ve been with you, but it’s been a long, wonderful time!
Thank you for all you do!
PS I love the Big Sur update! — Carri Keaton (USA) on Book Collector
November 17, 2020
My books organised
Easy to use and organise books. Love that it has a gesture for wishlist for future purchases. — Rebecca Quarton on CLZ Books
October 25, 2020
Very easy to use and quick
Recently I got a big collection of books and comics books. And hade to organize and create some kind of database for my self. Top app. — JPSerpa on CLZ Books
April 02, 2020
Love collectorz!
Having to stay home has given me the opportunity to organize and catalog my library of 1200+ books! All entered into the book on-line software and are now organized by author and title! — Denise Askea (USA) on Book Collector
February 08, 2020
Personal library
Detailed organization for my personal library of thousands of books. — Renee Plouff on CLZ Books
February 03, 2020
Keeps my bookcases organized
Helps when purchasing books to avoid doubling up and keeping my bookcases organized. 892 books so far. — Geoffrey Wheat on CLZ Books
December 19, 2019
Excellent way to organize your books
With this app, you will always have the titles of the books you have read or want to read in a very organized and easy to use format. No more going to the library or book store and not remembering if you already read a particular book. — Richard from Nevada on CLZ Books
November 13, 2019
Very user friendly
So far I am loving the app. It is very user friendly and has helped me get my child's books more organized! — Stephanie LeTourneau on CLZ Books
October 26, 2019
Great app
Great app to easily organize all your book collection. All my books are available go me on a quick and easy app. — A Google user on CLZ Books
October 05, 2019
I really like this app
It keeps track of the books I've read in an organized fashion. I can add my comments, rate, and date the books when I finish them. I recently had some difficulty logging into my app so I contacted Support. They were very helpful and stayed in contact with me until we worked out my problem. I highly recommend this app. — Jan Adamson on CLZ Books
September 05, 2019
Wonderful app
Like all of the catalog tools, they offer this app is amazing. I have over 1,500 physical & digital books plus over 2,000 magazines and the app lets me track them with super fast reports and plenty of group by options. A must buy if you want to avoid buying duplicates or want to know what you have for insurance purposes or the pure joy of it. Collectorz has been keeping my collections organized for a decade now. — Yodaman70 on CLZ Books
August 09, 2019
Fun!
A great and fun way to catalog one's library. I have over 2,000 books and this app will help organize it. — Joe Blavatsky on CLZ Books
July 15, 2019
Marvellous software
I currently have entered in Book Collector over 9100 books and have about 2000 more to go. Your software is the greatest!
Besides organizing my collection so that I can know what I have read, I use Book Collector on my cellphone when I am in a book store so that I can determine if already a book in my collection or not, to prevent buying a duplicate. It has saved me spending money when I have forgotten that I have a book already. Also to know what format, condition, and cover, that I have, if I want to get a book in a different copy version.
Thanks again for you marvellous software and your advice. — Guy Platz (USA) on Book Collector
January 13, 2019
Perfect app
I enjoy using the barcode or looking it up by book title or auther. It is so nice all I have to do is use my phone as a scanner, so I don't feel like I'm chained to a computer. Your database organizes the books very nicely. Thank you for making the app. — Sarah Mulvey on CLZ Books
November 02, 2018
Awesome program
What can I say? I love my Book Collector. I've so many ebooks and physical books its overwhelming. Before I bought your software, I had double and sometimes triple copies of books I'd already purchased and now, with your software I can stay on target with my books and copies are of the past. I have no funny anecdotes to share but I am very happy with my Book Collector and thankful that you had the foresight to create such an awesome program to make not just mine but other people's collections, be it books, music, games, movies.... such an easy way to keep us organised that we no longer have headaches trying to find what we want to read, watch, listen to or play.
I also am very happy with the prompt responses to any questions I may have. I have you as a friend on Facebook and have not hesitated in asking questions. Your responses have been precise and fast. I like that. It shows you listen to the consumer and do your best to give us what need. Thank you for that.
I also love the app that works wonders when I'm in the bookstore. I can check my collection and add my purchase or just add to the wish list with the bar-code. That is just another part of your Collectorz software that I am happy to have in my devices.
The price for your software is a bonus, it's reasonable and affordable, which keeps me coming back to update. So, again I thank you and although I've done it many times now, I will keep recommending your software to all those I know need it for their own collections. — Angèle Young (Canada) on Book Collector
October 25, 2018
The book lovers assistant
I just fell in love with this app. It is so easy to use with the scanning feature. My piles of books now are organized with a purpose. — ADesignerGirl on CLZ Books
September 08, 2018
My books organised
Great app in getting me and my books organised. I love that it could sync with the database that I have online and on my laptops. — Khatina Nawawi on CLZ Books
January 18, 2018
Absolutely amazing app!
It is so useful when it comes to shopping, since I own a lot of books. It's easy to use, but is organized well. I hope to unlock the whole database soon when I get the moneu to unlock it- I know I have more than 100 books! It'll be worth the investment for such a time-saver. — Eddie Wright on CLZ Books
August 28, 2017
Fabulous
I also have the full version of the book database it is fabulous as I love books and also music which I also have a full version, I also have movies data base as I Have a huge collection of DVD, the databases are amazing they help keep my life organized. — Marion Morella (Australia) on Book Collector

Read more reviews from customers