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Book Collection Software - catalog your home book collection by ISBN

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

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 February 23, 2021

Reviews from customers

February 22, 2021
Best app for Collectors, hands down!
I highly recommend this app! It’s super intuitive and easy to use! I use it every day to manage my ever growing book collection. This company cares about their software and are constantly updating and improving features. Give it a try! — Jon U on CLZ Books
February 02, 2021
So easy to use
I have enjoyed using this app. Cataloguing my book collection has been so easy and the ability to search the core for book details is a blessing. — Andrew Vaughan on CLZ Books
January 31, 2021
Great Book Cataloging App
CLZ Books is a very well thought out app for cataloging book collections, and has been getting better and more comprehensive in recent upgrades. The support team are great - queries are usually answered quickly and clearly. I've been using Collectorz software for a few years now, and have always been impressed by their helpfulness. If you have a book collection and you'd like to have a reference to it on your mobile device, CLZ Books is worth putting at the top of your list for consideration. — Sounztorm on CLZ Books
January 04, 2021
Very good app
The app does everything I want it to do to catalog my book collection. It is easy to use. It has many fields for recording whatever info you want to record about your books. — Elliot The Accountant on CLZ Books
November 02, 2020
Awesome app & excellent support!
I've been using this app for about 2 months, and couldn't be happier. I'm using the app in a slightly unconventional way - not for a personal book collection, but for the school's PTO book collection. The cloud feature of the app allows me to upload all our books, for parents / students to view what's available, and the flexibility of the app allowed me to customize each record to allow for people to select books they wanted.
Populating the app was very simple by scanning barcodes, and even when a barcode wasn't available, a manual entry was very easy to do. I did do some editing of records to ensure consistency across our database, but this too was very easy. I also edited a number of cover images by adding my own - again very simple a straightforward!
I highly recommend this app. Not only is it comprehensive yet simple, it comes with a first class support team. On occasions when I have had questions, I have dealt with three different support analysts, and each has been highly responsive, knowledgeable and friendly. You can't go wrong with this app! — Paulaclaire on CLZ Books
October 02, 2020
Great program
Thank you one and all for making such a great program for my book collection. I started using CLZ Books not long after it was introduced and at every iteration it has gotten better. The best part is that even an old man can easily understand and use it. — Jim Howell (USA) on Book Collector
August 27, 2020
Blown away
I just purchased Book Collector, and I'm blown away at how much this will be able to organize my over 5000 book collection. — Randall Sykes (USA) on Book Collector
August 16, 2020
Finally organized my book collection
This is a great app and has helped me to finally organize my book collection. Their customer service is also excellent. I had a small problem, which was down to the setting of my app. I emailed them and they were very quick to respond and resolve the issue for me. — Andrew Craig on CLZ Books
April 16, 2020
My book collection cataloged
With the help of my 5 cats, taking turns in my lap supervising, I've been able to finally get ALL of my book collection cataloged. Thanks so much for all you folks have done for this. — Tina Deaton (USA) on Book Collector
March 16, 2020
CLZ Big Help
I’m able to access my book collection of almost 6000 volumes regardless of where I happen to be. Thanks to CLZ, there are many times that I’ve avoided buying a duplicate of a book I already have in my collection. — fladesND on CLZ Books
January 21, 2020
Thank you CLZ!
I am amending my review to reflect the wonderful customer service I have received, as well as the functionality of the app. Of all the apps I tried to catalog my antique book collection, CLZ Books is my favorite. I like all the various data you can input, including reading date and price. My collection is from well before ISBN numbers (being published prior to 1900), so ease of manually inputting all of the data I want is important to me. I did try out scanning on one current book and it worked very well, but I haven't explored that side extensively. Edited to add, I just added a sci-fi/fantasy collection and used the ISBN scanner and was wowed by the plot summaries that came up! It's so fun! — RockyMtnSky on CLZ Books
December 19, 2019
Fantastic App
I bought CLZ after 15 years of using and maintaining my own custom built database. I couldn’t be happier. Perfect for cataloguing your book collection ! Has custom fields and tons of standard fields. Quickly add books to your collection by scanning bar code or entering titles/authors. Beautifully syncs with browser based and desktop app. Can’t beat it. — Rndmnknm 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 19, 2019
CLZ Books
I purchased my CLZ Book Collector mid-2005 to inventory my late husbands book collection which is now over 4000 and counting. First, I have to compliment the CLZ support team for their immediate and helpful response over these years to any inquiries, technical or otherwise. I recently purchased the CLZ Book app. I look forward to utilizing as going through my collection on the app I can maneuver easily, access any title, author, and readily add to the collection. The app provides convenience and flexibility away from the laptop. Props to the CLZ team who continually work to improve their product for the benefit of their customers. Cheers! Camilla — Props to CLZ on CLZ Books
September 09, 2019
Nothing’s perfect, but some things are close
I tried three other apps before I settled on this one for cataloguing my fairly extensive book collection (around 3k volumes). The deciding factors were: ease of use, particularly in finding relevant catalogue records from ISBN with or without barcode; use on both iPhone and iPad (synchronised, obviously); some potential for additional bespoke data items I might want to add; and good customer service from the developers. This is the app that ticked all those boxes.

The interface is good, easy to use, and I’ve added a lot of records very quickly, at the shelf with my iPhone. They often need editing (different editions, covers etc), but this is done easily and effectively. Synchronisation is excellent, and indeed you can access your database through the web interface, and there are Windows/Mac versions (at a price). I haven’t fully explored the additional data fields available, but they seem good. And as well as seeing a number of reviews which mention the excellent customer service, I’ve experienced it myself, with very full engagement from the developer with the issues I’ve raised - none of which have been major.

Nothing is perfect, and there are things that could be improved. You can’t do multiple item edits on the iOS version (you can on the desktop versions), eg to overwrite all “genre” entries across a number of records. There are some slightly awkward user interface issues in inputting records (issues the developer has agreed to consider). But I have confidence that the app will improve - it’s regularly updated - and it’s building on a very solid basis. So overall - I’m very happy. And I don’t say that about many software products! — Ben0779 on CLZ Books
July 23, 2019
Works great
Brilliant app for categorizing your book collection. Recognizes most books via ISBN barcode, even non-english books. Author and title search often find similar books if your barcode is not the same. Full manual entry also works.
Support answers quickly and politely even to questions that can be found in the manual. — Jorn Haugland on CLZ Books
June 16, 2019
Thank you CLZ!
I am amending my review to reflect the wonderful customer service I have received, as well as the functionality of the app. Of all the apps I tried to catalog my antique book collection, CLZ Books is my favorite. I like all the various data you can input, including reading date and price. My collection is from well before ISBN numbers (being published prior to 1900), so ease of manually inputting all of the data I want is important to me. I did try out scanning on one current book and it worked very well, but I haven't explored that side extensively. I am excited to unpack the rest of my collection and get them entered into CLZ Books! — RockyMtnSky on CLZ Books
June 13, 2019
Convenient scan using mobile
This is a very convenient way to maintain my book collections, and check whether I've already got a book wherever I am. — Marty Pilott on CLZ Books
April 18, 2019
This app is excellent
It allows me to scan in most of my book collection using the ISBN barcode. A small minority of my collection is not in the database yet, but inputting these is not difficult. Finally, I can download a custom CSV of my library to make a spreadsheet. The app interface is efficient and pleasant to interact with. This is app is an ideal took for a book collector like myself to use to catalog a personal library. — Sean Sovine on CLZ Books
April 02, 2019
Book collection app
Relatively new user but it does pretty much everything I want from a book collection app - was happy to uograde. — David Walker on CLZ Books
November 21, 2018
The best
Best app for Book Collectors & Chess Players with a large book collection! — Michael Ketrow on CLZ Books
November 13, 2018
Awesome App!
I was concerned after I had read a few reviews of Apps that can catalog your book collection. Then I read the reviews for this App! I paid 14.99 for the App. I am well pleased as I am not a librarian by any means! However with a little trial and error I quickly figured out how to either scan my books or type in manually. I think this is a great feature as not all books have a code. Also many of my books are quite old.
It also let me personalize if I wanted to! In fact I just put where the book was located in my home on what shelf. No labels had to be added! I love this App! Also I can share between my phone and iPad! — Mommee Dearest on CLZ Books
September 06, 2018
I commend you and your team
I have been so happy with the book collector software, especially since it can be synchronized with information on my iPhone.
It is wonderful to have a portable listing of my book collection. I commend you and your team for development of excellent products. — Bruce Wahlen (USA) on Book Collector
July 17, 2018
Exceeded my expectations
I have been using Book Collector for a couple of weeks now and I must report that it has exceeded my expectations in form and function. It is a well thought out program that is comprehensive, intuitive and aesthetic. The customization options are awesome. Kudos to you for coming up with such a program. This is exactly what my book collection was screaming for. Thank you. — Christopher R Carey (USA) on Book Collector
November 29, 2017
Beats them all
I've used several other book collection programs over the years and Book Collector beats them all in every category. I'm very satisfied with your product and intend to be a user for very long time. — Darrell Poteet (USA) on Book Collector
October 20, 2017
The best cloud database I’ve found!
For years I’ve tried several systems to manage my book collection database. I’ve created Excel & Access spreadsheets & databases nothing seem to fit the bill. Spreadsheets although functional lack of visual component that is important to manage your collection. Collectorz is the best app which allows me to store my database in the cloud and access it from all my devices! — applenicolo on CLZ Books
August 25, 2017
Book collection
I also have just started on this giant task, but thanks to Collectorz, I can finally come to grips with our book collection. — Mary Corrado (USA) on Book Collector
August 21, 2017
Love it
The best program for those with big book collections. — Andrea Hoo Chempinski on CLZ Books
August 07, 2017
Absolutely splendid
I have found it to be absolutely splendid, especially as I have a large collection of books. I would heartily recommend it any book collection. — Roger Ward (United Kingdom) on Book Collector
July 19, 2017
Highly recommend
I have this product for my (mostly signed) book collection and love it!! — Brian Engler (USA) on Book Collector

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