Home What's new? Reviews Shop Support

Book Database Software - catalog your book collection

Keep track of your book collection and wish listMobile app, web-app or downloadable? Your choice!
Automatic book details and cover imagesJust search our huge online book database by ISBN
Over 40 million ISBNs recognizedGuaranteed 97% success rate on your ISBN searches!
For your phone
  • Available for iOS and Android
  • Built-in camera barcode scanner
  • Sync data with the Movie Connect software
For your computer
  • For Windows, macOS, Linux, chromeOS, etc.
  • Use with the free CLZ Barry barcode scanner app
  • Sync data with the CLZ Movies mobile app

Or... use them both, as perfect companions!

Both CLZ Books and Book Connect can be used on their own, as a stand-alone solution. But these tools really come to live when used together, as they are great companions.
While away from your computer use CLZ Books on your phone, then use Book Connect at home, to work on your database on a big screen, with a real keyboard.
Of course, you can sync your database between them through our CLZ Cloud solution.

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

Also still available: Book Collector for Windows

Book Collector is our legacy desktop software. Old-skool software that you install on your own computer, with your data stored locally.
Using Book Collector is only recommended for advanced Windows users, who know how to install/update software, manage folder and file permissions, configure firewall/security software, make their own backups, etc...

Learn more about Book Collector

Latest software updates

Easy to use and I can create separate data files for each person in the family. I have CLZ for books, comic books, and movies love them all they do a lot more than I will ever use but I got them because they sync and backup to the cloud and after losing thousands of records from the freeby apps, never losing my records again from changing phones is the greatest. — Jim Payne (USA) on January 13, 2023

Reviews from customers

January 21, 2023
High-fives to the whole development team
I have been using your app for a number of years. I just wanted to reach out and let you know how much I look forward to your updates. Every single update you've made to this has been amazing. 9 times out of 10, it was something I didn't even realize was missing, and now use with every new book I add.
Great work - huge thanks and high-fives to the whole development team. Keep it up! — graycloak (USA) on CLZ Books
January 13, 2023
Love them all
Easy to use and I can create separate data files for each person in the family. I have CLZ for books, comic books, and movies love them all they do a lot more than I will ever use but I got them because they sync and backup to the cloud and after losing thousands of records from the freeby apps, never losing my records again from changing phones is the greatest. — Jim Payne (USA) on CLZ Books
January 09, 2023
Really easy
Made organizing my book collection really easy. — Kelly boettger on CLZ Books
January 08, 2023
Muy buena. La uso mucho.
Muy completa, buen precio y se actualiza con frecuencia con mejoras. — Axlperc (Spain) on CLZ Books
January 04, 2023
My llbrary
Great way to keep track of my library. — Bruce Thacker on CLZ Books
January 03, 2023
Helpful app
Looks good and works brilliantly! Just add books by isbn works great and if a book hasn't been added you can do that yourself and that's pretty easy too. What I especially like is there are two different coverviews. Option one; everything is boxed in and looks very near, the other option has the same height for every book, so wider books will be displayed large as well. — Douwe Drijfhout on CLZ Books
December 23, 2022
Das Tool für meine Bücher! — Herbert Wernig on CLZ Books
December 22, 2022
Works like a charm
4500 books and growing my inventory. Works like a charm, easy to use. Almost 2 years later, still very satisfied with Book Collector. Now managing over 25,000 books via using both desktop and Android versions. Work well together, application is updated regularly. Support is great, have issues? They will respond pretty quickly and help you with the problem. Staff responds well to suggestions and questions and have helped me quite often.
Here it is 2022 now inventory over 50,000 books. Love it! — A Google user (USA) on CLZ Books
December 22, 2022
No more doubles
Totally replaced my excel sheet and has saved me from double orders. — Aimee McLean on CLZ Books
December 22, 2022
This app is great! Love the fact that my books are sync to the cloud. — Cynthia on CLZ Books
December 20, 2022
Very handy, not sure I need all the detail you can get into, with it, but it has so many layers it does not matter — Mark Richards on CLZ Books
November 23, 2022
Absolute must
For a book addict, an absolute must. — RKay Kitchens on CLZ Books
November 17, 2022
The best
Best Book collection App ever. — Quan Cheaves on CLZ Books
November 09, 2022
Useful app
Really useful when I'm in a book shop and need to recall if which books in the series I'm missing. — Tasneem Perry on CLZ Books
October 30, 2022
The Best
The best such app I’ve found and I’ve tried many. The customer service is top notch and responds quickly. The upgrades are regular and useful. The customizations are tremendously helpful. Love this suite of apps! — teknopasto (USA) on CLZ Books
October 26, 2022
Does the job
I’ve tried a few cataloguing apps and this combines the best of all of them. Very customisable with fast scanning via your phone’s camera.
When contacted the customer support is super fast and personal. — psmorrison (United Kingdom) on CLZ Books
October 25, 2022
Great program and service
I was using this app to catalog the 4000 books in my collection. After about 1000 bucks I upgraded to an iPhone 14. It turns out that the camera on the iPhone 14 will not properly scan the barcode. I contacted the developer and they immediately got back to me. They kept me informed of the progress of the upgrade. They have subsequently fixed the problem and the app works fine now.
The app itself is particularly useful if you have books published after 1967 - you can just scan the ISBN code. You have to manually enter the name of pre-ISBN books, but usually the database that the app is connected to will have some of the information. You can then incorporate that information into your collection database. — collector of books (USA) on CLZ Books
October 14, 2022
This is a really cool app, love the statistics feature! — PL Jarious on CLZ Books
October 13, 2022
ISBN code scanning works nicely, very helpful. — 34zwecke (Germany) on CLZ Books
September 21, 2022
Very happy with this app
I love this app. I have a ton of books now at my fingertips. I don't have to spend hours looking to see if I have a certain book. It works everyone I go to use it. — Kim Goodwin on CLZ Books
September 18, 2022
You guys are the greatest...
I am able to go into any book store and insure I don't buy it a book twice. I am a collector only no resale so it makes my shopping easier.
You guys are the greatest... — Richard Huber (USA) on Book Collector
September 16, 2022
Excellent app
Incredible functionality. — Jackie Reeve on CLZ Books
September 15, 2022
Great product
First up - really impressed with the rapid response from tech support - it was much appreciated (how to add multiple authors to a book).
I've been using BookDB, which has been great, but remembering to export to txt and then copy to my phone so that I didn't buy duplicates in the 2nd hand book stores was getting tedious (you may have noticed I have a lot of pre-ISBN books). So the search was on for something that would allow me to maintain a sufficiently comprehensive database on my laptop and sync it to my phone with minimal effort. Your team has delivered.
Mapping fields between BookDB and Book Collector took a bit of trial and error (mark all as Skip Field, then go back and set correctly) and there are a number of notes I'll have to port manually (eg first edition/signed by author/family connection, austerity printing c WW2, condition of binding etc), but all in all, this is a great product - and the cost is extremely reasonable - I've definitely spent more than that on a single book, so the potential saving in avoiding duplicates is real! — Erika Edmondstone (Australia) on Book Collector
September 13, 2022
By far the best
This is by far the best software out there. — peyton sanders on CLZ Books
September 11, 2022
Perfeito para organizar a biblioteca. — Ricardo Machado on CLZ Books
September 10, 2022
It is fun to catalogue your books. And CLZ is easy and convenient. — Luana Chilelli on CLZ Books
August 17, 2022
Great app, great team!
I have been using this app for at least four years. The use is intuitive, the acquisition system is quick and the database is extremely well-stocked. The cards have an incredible variety of data with high customization. Furthermore, the support in case of need has always been fast and decisive. I highly recommend it for those who want to keep their library in order. — MattiaLusetti8519 (Italy) on CLZ Books
August 11, 2022
I love the program
Actually I am not new to CLZ. Several years ago I had purchased your software for my desktop computer and listed over 700 books I had. I love the program. I since have had several newer computers moved a few times. Donated many books thru the moves and lost my original program on my desktops/laptops.
I was so excited to see you offer an app I can use on my iPhone and reorganize the books I have left which are packed away in boxes currently. So to answer your question I love your app and am excited to get organized once again. — Norma (USA) on CLZ Books
August 03, 2022
Muito contente
Estou muito contente com a aplicação. — Palmira Gonçalves on CLZ Books
August 01, 2022
Really useful product for the price. — Sarah Snoddy on CLZ Books

Read more reviews from customers