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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 am a very satisfied user of your book collecting software and app. I love your program so much I gifted it to a fellow book collector because its such a great stable program! — Robert Lewis (USA) on July 28, 2020

Reviews from customers

July 30, 2020
Fantastic app
Easy to use and a great way for us to keep on top of our collections. — Meg Anderson on CLZ Books
July 30, 2020
Easy to use
This is such a nice program! Very easy to use. — Linda Bruton on CLZ Books
July 29, 2020
Useful system
I would like to say how very useful the Book Connect system has proved. The original purpose of cataloguing this collection – 7,800 items – was to enable it’s eventual distribution among a large number of beneficiaries; charities, museums, family and friends. Having the collection available online, in a non-editable format, has enabled many of these beneficiaries to submit relevant wish lists.
Your help/back-up service is exceptionally good! — Richard Campbell-Howes (United Kingdom) on Book Collector
July 28, 2020
Keep up the great work
I am a very satisfied user of your book collecting software and app. I love your program so much I gifted it to a fellow book collector because its such a great stable program! — Robert Lewis (USA) on Book Collector
July 26, 2020
Brilliant Apps from CLZ
At present i use movies, music and books. A great set of apps and support from CLZ. — 1944 mac on CLZ Books
July 22, 2020
Top quality
A pleasure to use. A top quality app. — Keith Andrews on CLZ Books
July 20, 2020
I love this app. It is so easy to use. But most of all I am very pleased with their customer support. I had a bit of a problem getting set up, ( no fault if CLZ) and they worked with me until everything was set up. Their service was prompt, courteous and helpful. My son and I also have their comic book app and it's great. I would recommend this app to anyone. — jackie becker on CLZ Books
July 18, 2020
Una de las aplicaciones más completas para gestionar una biblioteca. — Andrés López-Carrasco Rodríguez on CLZ Books
July 09, 2020
Great when shopping
Great for knowing what you have while shopping. — A Google user on CLZ Books
July 07, 2020
Great app
Exactly what I was looking for. — Sym Pty on CLZ Books
July 05, 2020
So far I'm able to scan my books and list them. This app is what I need. Extensive library! I'm just getting started. — A Google user on CLZ Books
July 05, 2020
Very intuitive
I love the setup and the layout. It's easy to use and very intuitive. — Suzanne Scherrer on CLZ Books
July 03, 2020
Terrific App
Allow you to capture all your books in one place. Great support when questions are asked. — Peter Gordon on CLZ Books
July 02, 2020
Want A Library App? THIS IS THE ONE
Just purchased this app along with Book Connect. Excellent package. Works flawlessly. And did I mention the (pre-sale) support. OUTSTANDING. Why can't every app interaction work this well? HIGHLY RECOMMENDED. — Ken Philip on CLZ Books
June 28, 2020
The absolute best!
I have tried about six book organisers and this is the best by far! Look no where else! — Gcamm1231 on CLZ Books
June 25, 2020
Bien fait et très utile
De même que CLZ Music, CLZ Books est bien ficelé. C’est certes un peu cher, mais depuis que j’y ai entré tous mes bouquins, mes vinyles et mes CD, je n’ai plus jamais acheté quoi que ce soit en double. Ça justifie déjà le prix. Et Alwin assure une assistance rapide et efficace en toutes circonstances. Bravo ! — jobarfou on CLZ Books
June 20, 2020
Wonderful app
I have hundreds of books and have been looking for an application to catalog them. This application is absolutely wonderful! It is very easy to use. — paw.books on CLZ Books
June 19, 2020
Great library experience
More than 15 people who are on our Library Committee and staff have looked at our 1500 book catalog in CLZ Cloud and are very pleased with it. To a person, they have said how user friendly they think it is. I am delighted since there were several people who questioned why we needed a catalog. You know how some older people are about change! I am an older person too but I am thrilled to offer your product as a great improvement to our library experience. Just think, we can check for books in our retirement community's library from the comfort of our own apartments and cottages! — Betty Iwan (USA) on Book Collector
June 19, 2020
Must have
I love all there apps i have the book comic and movie app A MUST HAVE FOR ANY COLLOCTOR I CAN NOT GET BY WITHOUT IT LOL. — Glen Pugh on CLZ Books
June 18, 2020
Fantastic product
Just a note to wish you well during these difficult times. I have just updated my subscription plan though to 2023. It made me stop and think that will probably be more than 20 years that I will have been using the software. It is difficult to cast your mind back to remember what the screens used to look like and the limited functionality. Well done to you all for developing a fantastic product and sticking to it through good times and bad.
I cannot imagine book collecting without Collectorz.com — Pat Roberts (United Kingdom) on Book Collector
June 15, 2020
I have been using the desktop version for years, just recently the app. The most trouble free programs you will find. On top of that, if there ever is a problem, their customer service is the best I’ve dealt with. Customer service response is fast and best of all, knowledgeable. For the minor issues I’ve contacted them about, all have been resolved promptly and without issue. — jmfs15001 on CLZ Books
June 14, 2020
The best!
Exceptional. Meets all my needs and more. — Rick Aust on CLZ Books
June 10, 2020
Love it
So easy to use and move through. — Cristen Edwards on CLZ Books
June 07, 2020
Two thumbs up
Awesome app!!!! — Melvin Arciaga on CLZ Books
June 06, 2020
Amazing app
I am using this app to help me organize my sheet music library. It is amazing. I wish I would have started this sooner. — Brett Merberger on CLZ Books
June 05, 2020
Great app
Use camera on tablet to view book barcode and if adds it to youre collection automatically. Always being updated with new features. — Derek Facey on CLZ Books
June 04, 2020
Love it
1200+ books easily catalogued. No more buying duplicates. — Adam Paige on CLZ Books
June 04, 2020
Awesome app
Love it, a great help to any collection. — Candy Dial 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
May 30, 2020
Great tracker
Great for keeping track of the books I can't stop buying. — Andy Woodward on CLZ Books

Read more reviews from customers