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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

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

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 April 23, 2021

Reviews from customers

April 30, 2021
Excellent!
Your "Collectorz" program for my books is "excellent". Keep up the good work!! I always recommend the Collectorz program to all of my Civil War Book Fanatics!! — John T Campbell (USA) on Book Collector
April 25, 2021
A joy to use
I have really enjoyed the use of your products over the years. The Books and Comics in particular made cataloging my collections a whole lot easier to finish and sort. It was really nice that I was able to add most items without having to enter each piece of data separately, like some of the other software out there.
What seemed like an endless task of adding 3500+ paperbacks and hardcover, became a joy to do. The use of a barcode reader just made it that much faster. I still had to manually input a fairly large number of books as they were printed before the barcode system came into being, but even that, for the most part, was reasonably easy to do by using the ISBN. A bit tougher to enter the ones without any ISBN listed, but there the search by title and author made things doable. — Per Olsen (USA) on Book Collector
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
April 22, 2021
Intuitive and user-friendly
I also wanted to take a moment to thank you for creating the Book Collector software. I have an extremely large book collection that I need to downsize, and I was hoping to find a tool that would allow me to easily catalog my books so I could determine which ones to sell, which ones to bring to the used bookstore, and which ones to keep. I also wanted to capture other details about my books. I discovered your website by pure chance through a Google search, and I am so happy I did since your software does everything I wanted to do (and more)! I having been working with data for 35 years and find that most tools lack the functionality that users would like, but that is not the case with Book Collector. It is very intuitive and user-friendly, and I have been able to figure out how to do something without looking at the manual. The app is a life-saver too since I found it challenging to use my web cam to scan the ISBNs. With the app synchronization, this work is very easy.
Thanks again for the wonderful resources you have created. — Jim V. (USA) on Book Collector
April 12, 2021
Intuitive & flexible
The best app I've found for cataloging my many books. The intuitive & flexible UI makes it easy to use... for adding new books, editing existing ones, and browsing & searching through my collection. Changes are easily synced between my tablet and the fuller Windows version I also use. And when needed, the CLZ support team is always very helpful and quickly responds to any questions I've had and features or changes I've proposed. Free apps aren't necessarily better; for me, this app is definitely worth paying for. — Ron Andrews on CLZ Books
April 07, 2021
Boyfriend’s Library
I have been hand cataloging and boxing up my boyfriend’s library for weeks now. There has to be at least a thousand books, bookshelves in every room. I have found many duplicates because he doesn’t recall which ones he has already bought. Now that I have the CLZ app I am saving so much time and he’ll never buy another duplicate! Loving it! — GourdsbyCarole on CLZ Books
April 06, 2021
Everything worked exactly the way the directions said it should
My old computer is dying, and I've been having a terrible time transferring various applications to the new one. But YOU have clear instructions for moving Book Collector on your website, and everything worked exactly the way the directions said it should.
Thank you! — Margaret (USA) on Book Collector
April 06, 2021
Excellent apps
I have the CLZ Books, Movies and Music ones and they are a great way to keep a record of my collections with so many categories to enter data. Their customer service is also first class and they usually respond to queries rapidly as they did with the latest update which resolved a brief problem with book cover photos not expanding when clicking on them. They came back quickly with an update and problem now resolved. Well done guys at CLZ. — Steve King on CLZ Books
March 31, 2021
Best book database I’ve found
Been using CLZ Books for two years now and have been pleasantly surprised. Top quality customer service. (This alone grants the developers 5 Stars) Inexpensive compared to other apps. They are continually interested in updating and improving this app for everyone. Easy to use and enter new books. There’s a space for almost everything and the final result will help you keep track of all your times. Many thanks. — Consumerpaul on CLZ Books
March 30, 2021
I just love it, great work!
The editing layouts are well improved and make more sense (logical grouping), and are simpler to use. Great idea to be able to add links, these are really usefull to keep info about books. Again, Great work ! — Guy Dauphinais (Canada) on Book Collector
March 30, 2021
Great! Saves me a ton of money!
So easy to use! We have so many books! Before I got this app, I was buying books I already had because I’d forget we had it. Now, I look in the app to make sure we don’t have the book before buying. It has certainly saved us money. Also, customer service is very responsive. They get back to you quickly and are very respectful and helpful. I recommend this app!! — Mrs T. on CLZ Books
March 24, 2021
No more duplicates
Love, love the ability to view what books we have in our library. Rarely do we duplicate. — Victoria Trujillo on CLZ Books
March 18, 2021
Book inventory made easy
The best and affordable book inventory software there is. Have been using it for the last four years and I like every aspect of it. Even their support is excellent. — Jacob Oommen on CLZ Books
March 17, 2021
CLZ Books
Uso da anni sia l'app che il sw su Mac prima e Win poi. Mai un problema. Assistenza veloce, efficace e comprensiva. Non ho motivo di cambiare! — Edoardo Mattei on CLZ Books
March 16, 2021
Awesome app
Great app for organizing my books. — Amanda Tess on CLZ Books
March 12, 2021
The best
Best book cataloging app and computer program there is. — Nat W on CLZ Books
March 12, 2021
Top support - super Funktionalität
Bei meiner Installation muss irgendwas nicht ganz sauber geklappt haben - also: ran an de Support. Was soll ich sagen, so dermaßen engagiert, bemüht, meinen Fehler zu finden - so etwas habe ich selten erlebt. Schritt für Schritt ist Alwin verschiedenste Szenarien durchgegangen, um dem Fehler Herr zu werden. Letztlich lag es wohl mehr an mir und meiner Umgebung... dennoch auch weiterhin nett, geduldig und hilfsbereit. Wow.
Dann lief die App und was soll ich sagen - sie bietet weit mehr, als ich brauche. Man kann über sein Buch alles erfassen, was es zu erfassen gibt. Dazu sind alle Eintragungen und Listen individuell anpassbar.
Daher top! — Neraphtar on CLZ Books
March 09, 2021
Love the software
Love that my books are synced with my desktop version of Collectorz. — Melinda Autry on CLZ Books
March 09, 2021
Long time user
I started using book collectorz years ago, probably 10 at least maybe more. I was using the PC desktop version until last year when my computer had a major meltdown. It took me a while but I decided to get an iPad and finally downloaded the mobile version of book collectorz. I figured I would have to redo my entire catalog all over again and I had tons of information. This was the best program I had found, hands down, and I loved updating my catalog.
To my surprise, I found my catalog in CLZ. I don’t have to redo every single book, yay! At the time my library was 6771 books. It was a daunting task to think of having to redo it. I’m thrilled I don’t and only have to add the new books. I love this program. It’s got so much functionality, easy to use, and looks good while doing it!
I recommend this program over anything else you could ever find. — books of kel on CLZ Books
March 08, 2021
Home library
I have a home library of around 350 books, and growing. It was getting to the point where I didn't know which books I owned already. I got CLZ as my home library database and have really enjoyed having it. It's super easy to scan books in or type in the ISBN, and it's easy to search as well. So when I'm at the book store I can quickly see if I already have a book or see what books I'm missing from a particular set. Definitely recommend for anyone with a large home library. — Lauren Rose on CLZ Books
February 28, 2021
Very Powerful App
We are using this app to catalog our church library. I tried several apps and this is, by far, the most powerful. I’ve been using it for a week and have already cataloged over 1,500 books. In a week they have already had a few updates, just adding little helpful touches. I love that I will be able to post a link to the books in the cloud so people can see what books are available. They can sort and search without actually changing the database. I can even download a .csv file to print labels for all the books. Very responsive customer service! Thanks! — CNK14 on CLZ Books
February 27, 2021
I wish more apps were like this
Like anything man made, this app has to be handled in use to reveal the underlying thought that created it. And a lot of thought went into it. I find myself smiling as, at first hoping that it will do something (solve a problem that arises) and then finding that, yes, it will do that. Very satisfying! And, when I can't find answers on my own, customer support is amazing and fast. — David Nixon 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
February 23, 2021
New release
I just want to thank you for the features in this new release. Very useful! — Mary on CLZ Books
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 21, 2021
Most comprehensive book database!
I haven't met a book I was not able To add to my collection. Even if the book was not in the Core database I was able to add it and it was verified within a day! I have used many Databases for my collections. I dropped them all for this one --- price is so worth the abilities this one has and the portability to numerous other platforms- able to copy to excel for backup. I feel so confident because if it prices me out I can still use it without updates. 10 STARS! — Deb Smith on CLZ Books
February 21, 2021
Excellente application
Excellente application qui permet, grâce à la recherche en ligne, où par la saisie du code barre, de référencer et gérer tous les livres de sa bibliothèque perso, et d'éviter très simplement et rapidement l'achat de doublons en vérifiant directement dans le magasin (Soit par saisie d'une partie du titre, ou du nom de l'auteur, ou encore en scannant le code barre ) : efficace, fiable et rapide ! — Un utilisateur de Google on CLZ Books
February 09, 2021
The best and most thorough app
I have created so many different databases to manage my various media collections. CLZ is by far the best and most thorough I have yet to use. Has the flexibility to add personalized fields and the cross platform functionality is awesome. — Randall W. Decker on CLZ Books
February 05, 2021
Absolutely love it
I have been using this product for years and I absolutely love it. — Carl Bass (USA) on Book Collector
February 02, 2021
Fun experience
I had this fun experience of attending a used book sale today where every book was 50 cents. I got my pile together, went off in a corner and entered them all into CLZ. In one batch I could add the specifics of the 50 cent price, the library sale I bought them at and the date. — Maria Stahl (USA) on CLZ Books

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