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Book Database Software - catalog 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.
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 life 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

I love that I can inventory all my books in one location and sync them to the cloud! Easy to use and add all my books quickly, especially if they have an ISBN. Some of my really old books take longer to add since they don't have an ISBN to type in but it still doesn't take long to add them to the book database. Hopefully, when I am adding them it may help other people to find those books in the future. Of course the ones I'm adding are really really old and probably aren't many of them left. — Jessica Webster on April 26, 2024

Reviews from customers

June 03, 2023
Love this app
I’ve been using this app for over a decade, and it keeps me from purchasing duplicates. Not only do I enjoy the book database capability, but I particularly appreciate the customer support. The two times I have needed help, I have received a response within 24 hours. They also update the app on a regular basis, so they are always working to offer an improved product. This is a great app for book collectors. — CDColeman (USA) on CLZ Books
June 11, 2021
Excellent app for creating and maintaining your book collection. I've been using their comic book database manager for years and decided it was time to oversee my massive book collection as well. — Michael Curtis on CLZ Books
April 23, 2021
Amazing Team at CLZ
CLZ Books is a phenomenal app. By far the best book database app out there. The user interface is exceptional, but the best part is the team behind CLZ. They are continually making improvements and they always pay attention to customer feedback which is a rare quality for mobile app. In today’s ever advancing digital world, it is essential to have such a responsive team like the CLZ team. — LongHairedFreakyDude (USA) on CLZ Books
June 01, 2020
Wonderful application
I’ve been taking the last 8 weeks of isolation to update my book database and want to express my many thanks to the developers and the customer service team. CLZ Books is a wonderful application. — Paul Morrow (USA) on CLZ Books
December 09, 2019
Valuable tool
I have really enjoyed using Collectors Books database. When I am out shopping I am able to see whether I have a particular book. An extremely valuable tool. — William Rowland on CLZ Books
August 12, 2019
The best
The best book database app on Android. Scanning is easy and fast. It also retrieves the exact edition of your book so your database is accurate as possible. This is a must-have for those who have hundreds of books in their home library like me. — Shane Comota on CLZ Books
March 23, 2019
Just perfect
Great book database. Best people to deal with. Help is never a problem. — A Google user on CLZ Books
December 12, 2018
EASY Restore!
OMG thank you for making it easy to re-download and install AND restore my database from a recent backup!!!! I had the blue screen of death yesterday and had to re-install everything, even Windows10. In a panic, I realized my CLZ book database was gone! But I found it easy to restore by clicking on the backup copy and Voila!
Thank you thank you for making great software! — Bev Connor (USA) on Book Collector
January 13, 2018
Highly recommended
Excellent. This THE best book database. Highly recommended. — Mauricio Jardini on CLZ Books
November 25, 2017
The best book db app
The best ipad app for creating your book database with a big difference. — oxidodenaveespacial on CLZ Books
November 24, 2017
High value for our money
I love your apps/software, and i think that we (your customers) get a very high value for our money. Its incredible how much we get for very little money. I hope you never stop supporting your apps/software, because i want to use it for the rest of my life. Im soon going to learn my mother how to buy and use it for her books.
I have tried A LOT of book database apps/software and none of them come anywhere near your products. Thank you so much for your exceptional work:-) — Tine Sandvold (Norway) on Book Collector
August 28, 2017
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
September 22, 2016
Best database app for books ever
This is the best app i have tried when it comes to book database apps. It has everything, and it also has great support, they answer you quickly. I highly recommend this app. I have tried others, but they dont come close to this spp. — TineCarinaS on CLZ Books
May 17, 2016
Book nerds favorite app!!
I am a college professor with a decent book collection. I have never really left a review this extensive before but I had to! I LOVE THIS APP!!! I haven't used Mac version so I am bit of a novice. I had been searching and searching for a book database app to figure out what books I have. It's easy to use, just scan and upload!! — SoCame DaGoddess on CLZ Books
April 24, 2016
Been using this since it first came out
Best book database app ever! I use it all the time, wherever I go. I always have an up-to-date list of my books and my wish list! — Stephanie Griffin on CLZ Books
January 23, 2012
Best book database program currently available for iphone. — Fussimist on CLZ Books
December 24, 2011
This software is amazing
I was looking for some software that would help me to take my library and get it under control. A fellow Pastor told me that he used Book Collector on his PC and thought it amazing.
I purchased a copy on that recommendation and started to use it. I have to admit that at first it was confusing and a bit overwhelming and the instructions were not the best.
BUT, this product is fantastic. It does everything I wanted. It takes the ISBN number and looks up the book in the CLZ Book Database, it then downloads copy of the cover and all of the pertinent information as well as a summary of the book to your database.
You then input your library information as well as your own notes, annotations, plots, characters, key words, etc. It also asks you for the information of your purchase date, price, where you bought it, etc.
I also allows you to choose categories (and add your own) so that future searches can be done quickly and easily.
It also has a lending tool. You can loan a book to someone and mark that book as "lent out" and it will track the date you loaned it, to whom, where it is and if you want, remind you to seek the return of it after a period of time. Now I won't wonder what I did with a book.
It also allows you to track in your own library where you have the book, in other words, at home, in the office, at school, etc. So, if you take it elsewhere you can mark that and when you look for the book you at least know where you last took it.
BUT THE BEST FEATURE is the scanner tool that you can download for your iPhone or iPod touch. The CLZ Buddy scanner turns your iPhone into a scanner that will pick up the ISBN bar code off your books and automatically fill it into the add feature of the software on your computer. It will allow you to add multiple ISBN's to the que before you search the database. Then you touch "search" and it finds all the info and displays it. You then touch "Add" and all the books are added to your software. It is amazingly simple.
Finally, if you want you can get the mobile app for your iPad or iPhone or iPod touch and download your library database from your computer (via WiFi) to your other device. So, if you are at a meeting and want to reference one of your books, just look it up. If someone asks if you have a book, check whether you do. Or if you are out at Barnes and Noble and see a book but can't remember (happens to all of us) if you already own it, just pull out your iPhone or iPad and check to see if you already own it. No more double purchases.
Well, enough said. This software is amazing. I don't know how I ever got along without it.
Enjoy! It is worth the price. — Dan Curnutt (USA) on Book Collector
February 03, 2005
I simply *HAD* to buy it
I was simply Googling for a book database and found your link. The main feature that hooked my into trying your product was the book cover scans. Very nice!

After I used the wizard to enter some of my collection, I was SOOO impressed at the ease of use that I simply *HAD* to buy it.

I'm a network engineer and I've never been as impressed with a program as I have with your product. I mean, I paid for it after about 1 hours use. Thanks so much!! — Peter Teubel on Book Collector

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