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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

Mobile app

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


Downloadable software

  • Downloadable desktop software
  • Install on one PC or Mac
  • All data stored on your computer
  • Sync data to CLZ Cloud (optional)
  • Free CLZ Barry barcode scanner app


Web-based software

  • State-of-the-art online software
  • Login and use from any computer
  • All data stored in the CLZ Cloud
  • Automatic updates & backups
  • 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

I would like to again thank you for your fast response and to let you know that all is up and running now, you have always looked after me in the past years and it is very much appreciated as I am not computer literate.I do promote your wonderful service to my friends and working colleagues as your product is the best, again thank you for all of your help and support both now and over the years. — David Mungall (Canada) on October 16, 2020

Reviews from customers

October 16, 2020
Your product is the best
I would like to again thank you for your fast response and to let you know that all is up and running now, you have always looked after me in the past years and it is very much appreciated as I am not computer literate.I do promote your wonderful service to my friends and working colleagues as your product is the best, again thank you for all of your help and support both now and over the years. — David Mungall (Canada) on Book Collector
October 16, 2020
Constant updates
The product is great, and the constant updates and information from your friendly company are excellent.
Keep up the good work. — Roger Morris (United Kingdom) on Book Collector
October 10, 2020
Perfect for my needs. — scoutmomskf on CLZ Books
October 09, 2020
CLZ app
I wouldn't use anything else! — Kristina Hill on CLZ Books
October 07, 2020
LA solution pour vos livres!
J’utilise CLZ Book depuis quelques années. Il ne cesse de s’améliorer et il me donne entièrement satisfaction. C’est un programme complet, inventif et précieux pour retrouver un ouvrage que vous avez classé et répertorié. Un choix que je ne regrette pas ! Merci à toute l’équipe ! — Sya Fulcanelli on CLZ Books
October 03, 2020
Excellent tool for organizing a library of any size. — David Gronseth 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
September 29, 2020
Highly recommended
This is the fourth CLZ app I have used and they're all of equally high quality. Easy to use and constantly updated so they keep getting even better. Adding a book is simple - just type in the ISBN or title (or scan the bar code) and unless it's a really obscure book the details pop up from the huge database. Even if your collection is in the thousands this app will store them with ease and display them in any order you choose. — Bravie2001 on CLZ Books
September 28, 2020
I love it
I am a book nerd and it is great to keep track of what I own when i am in a used book store. Also nice for recommendations. I love it. — Jgeis1701 on CLZ Books
September 28, 2020
Très bonne application!
J’utilise cette application depuis plusieurs années pour organiser ma bibliothèque personnelle. C’est une application très conviviale et très complète. Ils ont un Cloud qui permet d’effectuer une sauvegarde et de pouvoir disposer de l’accès à la bibliothèque sur iPhone, iPad et ordinateurs.
Leur support est très réactif et intervient rapidement en cas de problème. — Agent_124 on CLZ Books
September 27, 2020
Book Database
Great database for keeping track of books read, making notes of the storylines - easy to use and syncs between IPad and IPhone. — Yvonne1234567890 on CLZ Books
September 21, 2020
Great app
Great way to catalog my books! — Lani Gilbert on CLZ Books
September 17, 2020
Perfeito para organizar a biblioteca. — Ricardo Machado on CLZ Books
September 13, 2020
Life savers
Have both Books and Comics apps, and they are both life savers for the amount of books I have. There will be no more buying a book I already had. — steve jones on CLZ Books
September 09, 2020
Powerful app
I have used this app for quite some time and it just gets better with ever update. It's a powerful but simple way to do all the cataloguing of my many books and games. I recommend this to anyone who wants to catalogue. Many useful features and at a good monthly subscription rate. — Keith Michael Spence on CLZ Books
September 08, 2020
Pretty great app, and I actually subscribe to all 4 (games, comics, books, movies). — Devon Richardson on CLZ Books
September 08, 2020
Great application
After a long search for archiving books and music, I finally found the application according to my ideas. It is absolutely fantastic, modern. I definitely recommend anyone looking for this type of application not to save money and buy this app. You will definitely not find a better one. Now I have it on my iPad, but I'll probably buy it on my PC so I can add books and music over my PC. Even if more covers could be added. — vladino sk on CLZ Books
September 04, 2020
Super App
Stabile, zuverlässige App mit geter Benutzeroberfläche. Übersichtlich, einfach zu nutzen. Noch nie Probleme gehabt. Updates immer stabil und durchdacht. — Oskar Schönherr on CLZ Books
September 01, 2020
Thank you for a stellar group of products
I have 24 bookcases with six or more shelves full of books to be catalogued and sorted. I am doing this so my girls will be able to decide what to keep or discard.
Thank You again to all for all the fine products and support you provide. Please know that everyone's efforts to produce and maintain your products is sincerely appreciated. You and your "Gang" Stay Covid safe. — Stewart F. (USA) on Book Collector
August 31, 2020
Pretty good app
My only gripe is that in some books with multiple authors, I do not have control of the order the authors are listed. Otherwise, a pretty good app.
Update (31/08/2020): The version released today solved my problem. — Jun Fuerte on CLZ Books
August 31, 2020
Easy to use
Great way to know what you have! — Lisa Johnson on CLZ Books
August 30, 2020
I love the clz apps
I have had an account with clz games for awhile now and when I saw that y'all did the books I was super excited! — Jessica Hayes on CLZ Books
August 30, 2020
Very professional app
Ease of use and cloud facility make this app a winner. — Steve Cranley on CLZ Books
August 30, 2020
Great app
Easy to use and navigate! — Lindsay Guitard on CLZ Books
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 26, 2020
Perfect app
Perfect way to keep track of my 8000+ books. — Mathilda Bach-Frommer on CLZ Books
August 20, 2020
Books in Collection
I Like the fact That I’m able to scan my Books To see How many I Have in my Collection. That way I Know What Books I Have. — Kara Phillips on CLZ Books
August 18, 2020
The best app for book collectorz (together with the computer app). You can stock every data. It's great. — Maria Vittoria Bernardi on CLZ Books
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
August 16, 2020
Helpful app
So helpful for tracking both the books I own and the books I want to read. It's very easy to use and I appreciate the feature to search for books online. — sarah powers on CLZ Books

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