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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

I have been using the desktop Book Collector for many years to keep track of the books I own, the books I’ve read, and the books I want to read. The support (mostly for help moving to new computers over the years) has been prompt and kind. I love the CLZ mobile app because I can sync with the desktop version and check my collection while on the go. I’ve never needed support with the app but know that the team would respond promptly if necessary. All around good people with great products. — Orgmom on May 30, 2021

Reviews from customers

June 01, 2021
The best
Best way to keep books and keep track of when read. — Steven B on CLZ Books
May 31, 2021
I couldn't live without it!
Great database maintains my 1200 book collection! Before buying another I'm able to immediately check my current inventory. — Keith Krokyn on CLZ Books
May 30, 2021
Fantastic software for bookaholics - and clubs
I have used the book cataloging software for many years to catalogue the many (many) books we have stored in numbered boxes and bags in our loft. I had also catalogued the books belonging to our local Embroidery group. We wanted to make full use of the group’s books during lockdown and with the superb help of the Collectorz support team, we set up a separate Library and included, on separate sheets, books belonging to members who were willing to loan them out. Until face-to-face meetings resume, we have an ad hoc doorstep delivery system in place, supported by the Loan facility within the software.
The CLZ Barry scanner enables members to scan the barcodes of books they are willing to loan and email the ISBN numbers directly from the App to our Librarian for logging. Subject to Covid restrictions, we can work directly with any member who has as many books as me, to load the books directly. It is particularly helpful to be able to sort on technique, subject etc as well as author and title.
The software works and the support team are easy to contact and really helpful. Highly recommended! — Teresa the embroiderer on CLZ Books
May 30, 2021
Great app and great team
I have been using the desktop Book Collector for many years to keep track of the books I own, the books I’ve read, and the books I want to read. The support (mostly for help moving to new computers over the years) has been prompt and kind. I love the CLZ mobile app because I can sync with the desktop version and check my collection while on the go. I’ve never needed support with the app but know that the team would respond promptly if necessary. All around good people with great products. — Orgmom on CLZ Books
May 29, 2021
A super app for book collectors
The CLZ book program works beautifully. I have over 6300 books and have used this program for several years. I wanted a program that would be easy to use and accurate. I was often buying duplicate books because I could not determine if I already had a certain book. Using this program eliminated this problem. This has to be the BEST program on the market for tracking books and providing the records for insurance in case of fire or theft. I highly recommend this program for anyone trying to keep track of their books. — Lexkyusa on CLZ Books
May 29, 2021
Does it all. Cover to Cover
I had tried a few catalogue apps for my book collection. Most were okay, but they didn’t do everything I wanted, or they were too difficult to manoeuvre through, or just too expensive. Then one day, about 7 or 8 years ago, the one I was using just quit working. I couldn’t even get into it to export what I had already entered in. I went online and found out that it was done, no longer supported, and no questions would be answered. So I went online and started looking. It didn’t take long. I found a reference to Book Collector. This was an app that I could download and it looked like it would everything that I wanted. It was a reasonable price, and so I decided to give it a try.
FABULOUS ! FABULOUS ! FABULOUS !
It does everything I need, and does it well, and smoothly, and with over 3500 books on my shelves, that’s important.
Since then I have switched to their cloud service, CLZ Books. I no longer have to use my memory space. I just log in, make entries, deletions or changes and it’s done. The price is still very reasonable. This is the best book cataloguing service of any I have ever used. They also offer apps or cloud service for collectors of Movies, Music, Comics and Games. This team of developers has done and continues to an outstanding job. I would 100% recommend this to anyone who has a library to keep track of. — Ti-Cat Matt on CLZ Books
May 28, 2021
The best database
I searched for a database for years and found nothing. I came across CLZ almost by accident. It is spectacular. Nothing more need be said. — Mncon on CLZ Books
May 27, 2021
A must for prolific readers
Having an awful lot of time for reading over the past year or so, this app helps me to keep track of what I’ve read-especially useful if you’re a kindle reader where you lose track of what you’ve read without a physical cover to refer to! The app works well and so far I have never lost all my data so it must be fairly idiot proof! — Emmabookworm on CLZ Books
May 27, 2021
Perfect for Organizers!
I love to organize and as a homeschool mom I have nearly 1,000 books. Keeping them organized would be such a chore but this app makes it so easy! I love being able to scan the ISBN of a book to add it to my booklist. And pro tip: if you have lots of older books with no barcode, I’ve found the fastest way to enter them is to go to the keyboard for typing it in, and then click on my microphone and quickly say the numbers. Works great! — GoodHoll on CLZ Books
May 26, 2021
Works really well
This app really works. It is ez to input you data. I use the scan function. Well thought out and organized. — Peter Johnston on CLZ Books
May 26, 2021
Super useful app
I own over 900 volumes of contemporary poetry and I’m always looking to increase the collection by searching second hand bookshops. Before this app I would have to leave the store to get signal, log into the website and check if I already owned the book I was thinking of buying. With this app I can easily and instantly check if I own the book, and if not, buy it. Highly recommended. — VoltairesEnemies on CLZ Books
May 25, 2021
Love this app!!
I've been looking for an easy to use app to catalog my personal library, and CLZ Books is absolutely fantastic! It's better than the classic card catalogs at the libraries. And you won't get hangnails sifting through the cards. I love it so much, I suggested CLZ DVD to my boyfriend and now he uses it to catalog his collection, and my brother uses CLZ Comics for, you guessed it, his collection. — Marita M on CLZ Books
May 25, 2021
Easy to use, great support
I looked at many other programs and found the book app superior to all the rest. It's four years later and I thought I would update what I thought about this app. I love the ability to scan your smartphone and have a transmitted to your desktop automatically. It's easy to use, keep track of your books in different forms and you can change the looks and the settings of how they are displayed. It's a great little app, easy to use with great support. Rates five — Wayne Dyche on CLZ Books
May 24, 2021
CLZ Fan
I’ve been using the CLZ Apps for several years. I started out with the Music Collection but soon after, I got the Books app and the Movies app. I have over 500 books in my collection and most of them added easily with the Author’s name or title. I read almost exclusively nowadays from Kindle, but I added paperback books easily with the scan function. Recently, I have been reading newer works that unknown authors self-publish on Kindle because they are a heck of a lot cheaper than top sellers list books. If they are not in the database, they are fairly easy to add to the collection with book covers and an overview of the book. It’s a great app which I use all the time as I read a couple of books a week. — GoodTimes60 on CLZ Books
May 23, 2021
Great app to track my books
This is a great app for keeping track of your book collection, whatever you have. I have hundreds of books, paperback, hardcover, trade paperback, and hundreds of kindle books. The app is so customizable, and you can search your database in so many ways. By author, genre, publisher, type of book, read or unread. Customer service is great as well. These people really seem to care about you, and help to resolve any problems you may have. And you can keep your collection synced between your iPhone, and iPads. Works great, and it’s well worth the $15 a year they charge. — Thedeebert60 on CLZ Books
May 22, 2021
Amazing set of apps!
I have been using the CLZ apps for years to catalog my music, my books and my movies. The apps are easy to use, both in adding new titles and in viewing my collections. It is great to have all this information at my fingertips when I’m out at a record store or looking for a new movie to buy to make sure I don’t already have what I’m looking at. Highly recommended! — Kenrus60 on CLZ Books
May 21, 2021
Brilliant!
CLZ Books has been the perfect way for me to catalogue my extensive book collection. The regular App updates continue to expand my data base. The CLZ team are so helpful too whenever I’ve had a query. — jjjcompass on CLZ Books
May 21, 2021
Best book catalogging tool
Love this app for keeping my library of books on record and well organized. No more duplicates which can be frustrating as well as expensive. I appreciate knowing my database is available to me on my PC and cell phone via the cloud, with no worries about maximum size. I’ve had this software for years and have enjoyed watching the developers continue to expand and improve its capabilities and design for ease of use. They’re always available and very prompt with functional as well as technical issues. I look forward to the future knowing we can rely on their growth and continuance. — halftracker on CLZ Books
May 20, 2021
Great Book inventory product
I own over 540+ books and this does a nice database job. I buy a lot of HISTORY books and computer books, this works great to prevent duplicate purchases. When looking at new wish books like the wish list for recall when asked for gift ideas. Like the detail and the book cover pic to compare if purchase or already own. Easily search when shopping especially mobile. Alwin & Team constantly adding new features Via enhancement updates. If there is a problem The Team addresses it very quickly although i have owned for many years and haven’t found too many issues mostly just added enhancements. Highly recommend, cost effective and enjoy it so much purchased several other of his inventory products. Couldn’t add to collections without this product And adding via Title or even better ISBN or UPC code is great. App is flexible and allows for cover graphics override so can match exact ownership version. Highly enjoy & Recommend. — Barmeister on CLZ Books
May 20, 2021
Very happy with CLZ
I have used this app for several months and couldn’t be happier. My book collection is small with 344 books at this time ranging from mysteries to books on Japan, quilting and travel/adventure. A little more than half are nonfiction. I always kept a paper record of my books and their location but feel that is no longer necessary as this app has never crashed or stalled. I will soon have more space for books and with CLZ I feel confident in keeping a larger collection. — Kf2Kt on CLZ Books
May 18, 2021
Fantastic app
Having a rather large collection of books I’ve tried many apps for cataloging them and CLZ is by far, BY FAR, the best of them. The tech support is great if you have a problem, which doesn’t happen very often. I know that their app for movies is also fantastic. I would imagine that the apps for games, music, comics, etc. are also excellent. I would recommend all their products without reservations. — dannyboy 2001 on CLZ Books
May 18, 2021
Wonderful app
I’ve been using CLZ for years now. I use the desktop version for ease of entering info (such as new books or managing loans) and I also have it on my iPad and iPhone. I love being able to look on my phone and easily see if I have or need a title when I’m at a store or book sale. And I can always look up info wherever I’m at! — Chatsworth22 on CLZ Books
May 18, 2021
Excellent app and support
Have used this app since it first came out and it’s been a time and money saver. Stops me from buying duplicate books. You can also create a wish list and everything is on my phone. — PDF7300 on CLZ Books
May 15, 2021
Fantastic app and service
I’m so glad I found the CLZ apps, they are fantastic. I had a couple of issues that were looked after by the team extremely quickly. No hesitation in recommending this app as well as the other two that I have. I love my databases! — Boo's Castle on CLZ Books
May 11, 2021
Excellent app and support
I needed something to replace an unsatisfactory Excel spreadsheet which I’d maintained for years. I’m very impressed with this app - so far, I’ve found the app pretty much does everything I want from it. It also offers more than enough ways to cut and filter the data. Any issues or queries you might have get a very speedy response - the support is really good if you have any questions as to how the app functions. Everything about it is logical and it works well across both iPhone and iPad. Just give it a try and you won’t be disappointed. — hwcolu99 on CLZ Books
May 11, 2021
CLZ Books - A Good Beginning for a Life Journey with Books
CLZ Books helps to introduce an order into a possible book chaos when you have more than few of them. The app has good visuals and presents, among others, book covers on each shelf placed front covers to a viewing user. I have still not figured out if there is an option to quickly place a photo or a scan of a book’s Table of Content, Index or Bibliography straight into the database, which would be handy. Also I do not know if there are options to export or import books from other bibliographic apps on the market. — W P Nowak on CLZ Books
May 04, 2021
Great App
As a Church Pastor I have thousands of books. Cataloging them was a challenge up to now. Along came CLZ which is an incredible app for keeping record of all my books. You have the option to add them manually or by scanning them on your device. The fact that it works on both my iPhone and iPad is a bonus.
I had some issues with trying to synchronise my books on both devices but after a few emails to the friendly and professional staff at CLZ the problem has been sorted. It’s worth the annual fee! Try it… You won’t be disappointed! — FanRev on CLZ Books
May 03, 2021
The best
Best personal library app I've used! With the computer version, reports can be printed for insurance purposes. Excellent program!! — Susan Stenberg on CLZ Books
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

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