Library Software

I had considered many ways to catalog my large library of history books. I had, for example, thought about creating an Excel worksheet. That was too cumbersome and too probe to error. Then, I stumbled upon this marvelous app and my problems were solved. Thanks so much for your creativity and ingenuity.

My TBR list is so long and I often forgot which books I've already purchased. This app was so easy to use and now I have access to my library wherever I go. No more buying duplicates.

This app organizes your books, very well done easy to use, set up no problems! Makes your library even more enjoyable.

I am using this to catalogue my late father’s library. Its database of books and its ability to search against ISBN are vital tools. I would be lost without it. The support staff are very responsive and the one time I needed them quickly resolved the issue.

I’ve been looking for a really good way to organize my library. I am a collector with literally hundreds of books. This is the way! Even my old books, with no ISBN numbers, are easy to add, and it’s great to be able to be organized at last. Customer service is exemplary and I’m so happy a friend recommended this.

I have zero complaints with it so far. The cloud backup feature is nice, and I also appreciate the ability to export the full library if I need to.
Edit: one other thing to note: I actually appreciate that this app is supported by a very reasonable subscription fee. The last thing I want is an app that is free and never updated and eventually dies, or a bunch of ads. If you do eventually tire of paying a small fee, you can easily export your library.

This is my favorite app. It keeps all the information about my library at my finger tips. This app is easy to use, provides tons of information about my books and is fun to use. It gives me total access to my information about my books and prevents purchasing duplicate books since the information is always at my finger tips. Need help or have a question, they are always available.

I don’t usually do app reviews but I’m compelled to do one for CLZ Books given my experience over the past year and specifically within the past couple days. I’ve been using CLZ Books for a few years now, to varying degrees, but I have really started to put it through some hoops in the past year as I’ve finally begun to organize and catalogue my book collection, now approaching 2250 titles.
I first got it to replace another library app that went defunct, to help me avoid my common mistake of buying a book I already had, but I was quickly a fan of how easy it was to add books to my collection and to make notes for each entry. And with every update, improvements were made that made organizing my library a little bit easier.
There is a lot of data available for almost any book you might have, and adding books not in their database is pretty easy.
The best part of CLZ Books is the responsiveness of their customer support. The other day I had to reinstall CLZ Books on a new phone, and after I’d synced my library to the cloud, the app kept crashing. I was despondent because organizing my library has been a big part of my daily life for months, and the thought of not being able to use the app as a resource was rough.
I looked through the online CLZ community for any hint as to what was going on, and I fired off an email to CLZ support describing my situation. Within hours, I received a reply that a bug had been detected in a recent update and that they’d just pushed through a new update to resolve the issue. Sure enough, once I downloaded and installed the new update, it worked perfectly and I can now continue to organize my library.
Is it perfect? No, there are some sorting and search issues that can be improved upon, but I’m relatively confident that CLZ support will be responsive to comments and questions on the various forums and emails and get us to as close to perfect as we can expect.

I got convince by a Martha Stewart review a long time ago, and this has been extremely useful. The step to making it even more useful is to take the physical books and sort them by the Library of Congress number which is in the database.

This app provides a great way to catalog your library. Intuitive and easy to use, and constantly being improved by the developers. Love it!!!

tried a lot of different library apps and this is by far the best one. they have most of the special editions I own, even brand new ones that aren't on the market yet and if they don't have it, it's easy to add, while I really struggled with finding and adding special editions on other apps. also love that it's independent owned and run by a small team!!

This is the 3rd library app I've sampled and far and away the best! It scans the isbn number even if there's no barcode. It easily identifies the isbn inside a paragraph of words. This makes the job go so much more smoothly!

Really well done app. Very intuitive. Was able to catalog over 300 books in fairly short order. Cloud sync with export capabilities. I would like to see the export categories be selectable in future update releases - that would be a bonus! Recommend to all - young children could help sort the library with this - it is that EZ.

This is an amazing app for tracking a library or adding books. I have a library of 2000 books and it transferred very easily...and I am not too good at that stuff. However, the app has been wonderful for not only me, but my family uses it as well. I had my library uploaded to it in about 25 mins and cleaned up quite a bit. I highly recommend this app. It is very functional!

I have been using CLZ since what seems like infancy days when I had to organize a very very large library of a film director/historian. I have seen CLZ grow like GREAT technology and it’s worth every penny I pay in my low budget to organize the great books
Thank you CLZ programmers and investors. We need more of both of YOU!!

NC passed law HB805 that requires schools to post searchable catalogs of library books online and allows parents to block their children from borrowing certain titles, beginning with the 2025-26 school year. This app made the process easy & we were able to log over 25,000 books in 4 days thanks to it & wonderful PTA volunteers!
The app is not perfect but it is economical & easy to use. It saved us TONS of time compared to the protocol that the county suggested we use. HIGHLY recommend if you’ve got lots of books to catalog!

A very good tool for tracking books. Allows a lot of details to be included, if you care. (For instance, the original title and the translator of a book originally published in another language; or the location of a book in your library.)
Books can be catalogued either by ISBN or by title and author. The ISBN lookup is quite good, and easy to correct or extend.
My wife and I have used it for years, for our 7000-odd book collection, and it’s been a great experience. The developers are also open to suggestions.

This app is so feature filled it is just amazing. My husband has a library of 5,000 books we thought we would never catalog and now I have got have of them in my CLZ database already. I have a few minor issues and suggestions which I am going to send to the developer separately, but in general, I love this app.

Just a note to say thanks very much for your wonderful tool. I was able to use it to easily and quickly catalog my mother's collection of scholarly scandinavian books. The cloud feature is wonderful, as I am now able to share the library with universities who are interesed in receiving the books. I had originally planned to use a spreadsheet and photos, uploading it to dropbox, but this is so much better.
Thank you so very much.

I helping a friend move & she is reducing her considerable library for the first time in 20 years. Over 500 books scanned by CLZ and easily tagged for keep, resell, & donation. So easy to use! The CLZ app makes all of that possible. I like the desktop version for modifying or editing any folders or books but quick fixes.

I was assigned the task of cataloging my father’s library, a retired professor with over 3000 books. I have tried to use other apps and struggled. This app is a game changer and a life saver! It’s so easy to scan multiple items and finds titles quickly, it syncs with my computer, and I was able to create a print out to show my father the list with Book cover images! There is no other app like this one! Thank you for creating this!

This app is a great investment. Keeps my library cataloged beautifuly.

Easy to use- my library is now catalogued!

Just what I needed. Easy to use. Scan the code and add it to your library.

I had used Delicious Library back in the day but this blows that completely away. The functionality is great and the appearance is uncluttered but complete. Very easy to use and responsive developers!

This is such an essential app for anyone with an extensive library or for those who like to keep their collection organized and accessible. Also a great tool to keep a record of the books you own in the event of a worst case scenario. Easy to use and extensive with a lot of features. Love it!

Everything I wanted and needed to catalog my library!

CLZ Books is the most wonderful piece of software, enabling me to keep track of my library. Loading new books is made easy through use of ISBN recognition, and the editing and display options are easy to operate and comprehensive. The owners and software engineers must be congratulated on producing a really astonishingly good product.

I’ve been with Book Collectors Connect, now CLZ, for many years. Best way to keep a large library of books. I appreciate the ease of use program and the team is readily available whenever you have questions or need help.

Cataloging my over 1000 book Time Life Library...Lifesaving!.. I've cataloged my Time Life record collection on CLZ as well!