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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

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 October 30, 2022

Reviews from customers

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
July 30, 2022
Your library in your pocket
User friendly app to keep track of books, music, and more. Know what's in your media library and avoid duplicate purchases. You can even create a wish list for items to add to your library. Works on a desktop computer as well as a smart phone. — CB Youngblood on CLZ Books
July 21, 2022
Loving it!
New user but so far loving it! — Paul on CLZ Books
July 18, 2022
Handy app
Works as described. Handy for someone who owns many books, — tom baron on CLZ Books
July 17, 2022
Brilliant app!
I've tried several alternatives, but none of them compare to the CLZ Books app. I also use the CLZ DVD catalogue app, which is equally brilliant. They're easy to use, intuitive and have a cloud backup system that's very reassure. Thank you. — Somayeh Moballeghi on CLZ Books
July 17, 2022
Fantastic App!
The app has been fantastic! As my collection grows it’s hard to remember exactly what titles are in it sometimes, your app fixes that issue for me! — sjruss86 (Canada) on CLZ Books
July 17, 2022
Keep track of my books
I use this app to keep track of books I own and read. It is fantastic. — Angela castleberry on CLZ Books
July 14, 2022
Fantastic app!!!
Finally my books are organized. — geoff smith on CLZ Books
July 13, 2022
Love it!
4500 books and growing my inventory. Works like a charm, easy to use. Almost 2 yeard later, still very satiafied 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. — A Google user on CLZ Books
July 09, 2022
Keep track of our extensive library
Best app we have found to keep track of our extensive library. Love that you can make personal notes as well. — Marie Culp on CLZ Books
June 17, 2022
Keeps me sane
I have had this app since 2018. This is the one app that has kept me sane. It does everything I need around books. All the memory is stored on the app so I do not have to worry about memory space. I have almost 800 books and this app has made it easier for me to know what I have, keep track of where the book is ( I am able to include notes on a book if I have to lend it out to friends or family) and adding new books is easy. I highly recommend this app to anyone who has or is planning to build their home library. — Quaydiquay (Canada) on CLZ Books
June 10, 2022
Love the CLZ series of apps
I use this one for my books and the CLZ Games for my modern & retro games. I am happy to pay for premium of both just because the price is so reasonable and the apps are so good. Being able to add items by scanning the barcode with the camera on your phone is just awesome. Love it. — Shane Hurley (Ireland) on CLZ Books
June 01, 2022
My book collection
This is a great app for keeping track of my book collection. — Michael Ryan on CLZ Books
May 24, 2022
Couldn’t Live Without
I’ve used CLZ for years and totally depend on it to maintain my over 2,200 book list. Originally I imported my, considerably smaller list, from another book collector app and found that CLZ far surpassed the other app. The many available fields make it easy to track whatever is important to you. Anytime I’ve had a question support has replied to my query quickly. Support is absolutely awesome. — GrandPuppy4 (USA) on CLZ Books

Read more reviews from customers