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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 very well thought out app for cataloging book collections, and has been getting better and more comprehensive in recent upgrades. The support team are great - queries are usually answered quickly and clearly. I've been using Collectorz software for a few years now, and have always been impressed by their helpfulness. If you have a book collection and you'd like to have a reference to it on your mobile device, CLZ Books is worth putting at the top of your list for consideration. — Sounztorm on January 31, 2021

Reviews from customers

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 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
February 02, 2021
So easy to use
I have enjoyed using this app. Cataloguing my book collection has been so easy and the ability to search the core for book details is a blessing. — Andrew Vaughan on CLZ Books
February 02, 2021
CLZ app
Used this app for years and it keeps getting better. — Scott Senior on CLZ Books
January 31, 2021
Great Book Cataloging App
CLZ Books is a very well thought out app for cataloging book collections, and has been getting better and more comprehensive in recent upgrades. The support team are great - queries are usually answered quickly and clearly. I've been using Collectorz software for a few years now, and have always been impressed by their helpfulness. If you have a book collection and you'd like to have a reference to it on your mobile device, CLZ Books is worth putting at the top of your list for consideration. — Sounztorm on CLZ Books
January 27, 2021
LOVE all CLZ!
I love all CLZ, I also use comic data base. — ice King on CLZ Books
January 26, 2021
Wonderful program
Thank you for a wonderful program by the way; it was good when I bought it a few years ago and just keeps getting better and better ... I just need to use it more often. — John Moran (United Kingdom) on Book Collector
January 26, 2021
Great program
I have had the computer version for years. Just now finally got the phone app. Easily synced with the cloud. — Diana Goldie on CLZ Books
January 24, 2021
The number 1 application in its category
I continue to be very pleased with your Book Collector system - it is unquestionably in my opinion the number 1 application in its category, and the support I have received on the few occasions I've required it has been first class; I never hesitate to recommend it to friends (though of course I can never guarantee they will follow my advice!) — Colin Pearce (United Kingdom) on Book Collector
January 16, 2021
The best database app
Best database app for books and movie collections. — Tim Grahl on CLZ Books
January 13, 2021
Great program
Great program to keep track of all my books and great customer service get back to u same day. — B Kelley on CLZ Books
January 13, 2021
Excellent App
With over 1000 books and an obsessive book buying personality this is my favourite app on the phone. Extensive sorting and personalisation of catalogue capability and a friendly interface. Now I won’t be buying double ups all the time. Scanning is fun and found every single one. — Aus Volpe on CLZ Books
January 07, 2021
Love the app
Two days into using the app and my Partner and I have logged over 150 books of every flavor, super easy. — Nathan Devonshyre on CLZ Books
January 04, 2021
Very good app
The app does everything I want it to do to catalog my book collection. It is easy to use. It has many fields for recording whatever info you want to record about your books. — Elliot The Accountant on CLZ Books
January 03, 2021
Great Book Cataloguing App
I really like the CLZ Books app. Previously I had a free app that was a lot of work. What I really like about CLZ is that I don’t have to keep typing in the location of books on the same shelf. The next book I enter automatically is at the same location and I can change locations when I want. It seems like a small thing but actually saves quite a bit of time. Previously I had a free app that required typing in the location for each book. Another feature I like is the large amount of books available when I search by title so I don’t have to manually enter very many books. Finally, the colors on the list of my books is a nice touch. I am very happy I found your app which makes cataloguing books fun rather than work. — Kf2Kt on CLZ Books
January 01, 2021
Thank you again for collectorz!!
Love the new Pre-fill screen feature!! Great feature!!! I have always had to edit each book to add additional info, so this is awesome!!!
Thank you again for collectorz!! It has been such a blessing to be able to catalog all my books. — Denise Askea (USA) on Book Collector
January 01, 2021
I use Book collector almost every day!
Dear Alwin and all at CLZ,
Thank you so much for all you have done to keep this amazing program going! 2020 has been so difficult and having access to organizing my books has been one of those pleasures that bring peace in chaos. I’m in the USA, so you can imagine…no don’t, it’s not worth it yet.
Seeing your Christmas card made me smile and cry at the same time. I hope the celebrations you have for your 20th year “make up party” are ROCKIN’!! I’m not sure how long I’ve been with you, but it’s been a long, wonderful time!
Thank you for all you do!
PS I love the Big Sur update! — Carri Keaton (USA) on Book Collector
January 01, 2021
Happy New Year!!
I'm starting off 2021 with a custom bookcase wall being fitted and can't wait to use your program to organise my humble collection! — Sarah Foote (United Kingdom) on Book Collector
January 01, 2021
Good
Does exactly what I need. — Sean Mortensen on CLZ Books
December 30, 2020
My hone book library
So happy to be a part of the CLZ world wide family. Your team has made my life a little easier by helping me manage my home book library. May the new year bring all of you good health and happiness. Happy New Year! — Katherine Mackenzie (USA) on Book Collector
December 30, 2020
Happy 20th anniversary
Many congratulations on your 20th anniversary, it is not many start up companies that survive 20 years. Pass on my appreciation to all your team who have supported me over the years. I am not quite your first user but I think I signed up for Book Collector before 2003/4. Your software has progressed and improved every year and I couldn’t collect books without the support of my database.
Stay safe and Happy New Year — Pat Roberts (United Kingdom) on Book Collector
December 30, 2020
Very complete
Easy to use, great support for site, very complete manner to list books. Would recommend getting both phone and web version and sync between the two on the cloud. — John Woodworth on CLZ Books
December 21, 2020
If you have a huge book collection, this app will help!
It’s been less than one full day since I downloaded this on my phone and input about 250 of my books. The scanner/database worked for about 90% of those, and the rest were pretty easy to enter manually. I still have about 1500 books to go, but I’m already very happy with this app and will be renewing/maintaining my subscription. — corvis9 on CLZ Books
December 09, 2020
The best
Don't look any further. This is it! — Rusty Wilson on CLZ Books
December 08, 2020
Excellent!
This app has completely changed the way I approach my books. Ever tool you could possibly need for identifying and cataloguing ones personal library all wrapped up in one succinct package. Also trying out the Movie and Music versions! — Grogu's Guncle on CLZ Books

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