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ISBN Database Software - catalog your books by ISBN

Automatically download book details by ISBNLike author, title, publisher, genres, subjects & cover art.
Just search our huge online ISBN database ... ... by ISBN or by author & title.

Mobile app

Mobile app for phones and tablets

  • Access your collection on the go
  • Install on multiple phones/tablets
  • All data stored on your device
  • Sync data to CLZ Cloud (optional)
  • Built-in camera barcode scanner
pricing
subscription includes all
app updates + online services

Desktop software

Desktop software for PCs & Macs

  • For advanced computer users
  • Install on your own PC or Mac
  • All data stored on your computer
  • Sync data to CLZ Cloud (optional)
  • Free CLZ Barry barcode scanner app
pricing
subscription includes all
software updates + online services

Web-app

Web-app, fully cloud-based

  • Easy to use, easy to manage
  • Login and use from any computer
  • All data stored in the CLZ Cloud
  • Automatic updates & backups
  • Free CLZ Barry barcode scanner app
pricing
subscription includes all
software updates + online services

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’m using this app to catalogue my collection of over 1,000 cookbooks. Scanning the ISBN numbers with my iPhone has made this task much less daunting. I can also customize my results to my way of liking. Support is immediate and knowledgeable. Highly recommend this app! — Nrupup on September 12, 2019

Reviews from customers

September 09, 2019
Nothing’s perfect, but some things are close
I tried three other apps before I settled on this one for cataloguing my fairly extensive book collection (around 3k volumes). The deciding factors were: ease of use, particularly in finding relevant catalogue records from ISBN with or without barcode; use on both iPhone and iPad (synchronised, obviously); some potential for additional bespoke data items I might want to add; and good customer service from the developers. This is the app that ticked all those boxes.

The interface is good, easy to use, and I’ve added a lot of records very quickly, at the shelf with my iPhone. They often need editing (different editions, covers etc), but this is done easily and effectively. Synchronisation is excellent, and indeed you can access your database through the web interface, and there are Windows/Mac versions (at a price). I haven’t fully explored the additional data fields available, but they seem good. And as well as seeing a number of reviews which mention the excellent customer service, I’ve experienced it myself, with very full engagement from the developer with the issues I’ve raised - none of which have been major.

Nothing is perfect, and there are things that could be improved. You can’t do multiple item edits on the iOS version (you can on the desktop versions), eg to overwrite all “genre” entries across a number of records. There are some slightly awkward user interface issues in inputting records (issues the developer has agreed to consider). But I have confidence that the app will improve - it’s regularly updated - and it’s building on a very solid basis. So overall - I’m very happy. And I don’t say that about many software products! — Ben0779 on CLZ Books
August 17, 2019
Muy buena aplicacion
Muy buena aplicacion y muy completa. Puedes agregar todos los datos necesarios: Isbn, codificacion Dewey, clasificacion por generos, etc. — Felipe Diaz on CLZ Books
July 23, 2019
Works great
Brilliant app for categorizing your book collection. Recognizes most books via ISBN barcode, even non-english books. Author and title search often find similar books if your barcode is not the same. Full manual entry also works.
Support answers quickly and politely even to questions that can be found in the manual. — Jorn Haugland on CLZ Books
June 16, 2019
Thank you CLZ!
I am amending my review to reflect the wonderful customer service I have received, as well as the functionality of the app. Of all the apps I tried to catalog my antique book collection, CLZ Books is my favorite. I like all the various data you can input, including reading date and price. My collection is from well before ISBN numbers (being published prior to 1900), so ease of manually inputting all of the data I want is important to me. I did try out scanning on one current book and it worked very well, but I haven't explored that side extensively. I am excited to unpack the rest of my collection and get them entered into CLZ Books! — RockyMtnSky on CLZ Books
May 13, 2019
I love this app!
So much easier than the spreadsheet that I was using to track the books in my collection, and books that I was interested in. You can scan the ISBN or type it in for books that do not have the barcode. The app then pulls in most of the books info and a cover image. — Dave West on CLZ Books
April 18, 2019
This app is excellent
It allows me to scan in most of my book collection using the ISBN barcode. A small minority of my collection is not in the database yet, but inputting these is not difficult. Finally, I can download a custom CSV of my library to make a spreadsheet. The app interface is efficient and pleasant to interact with. This is app is an ideal took for a book collector like myself to use to catalog a personal library. — Sean Sovine on CLZ Books
March 17, 2019
Best Book Organizer on the Market
I’ve tried two other apps to keep track of my huge book collection and have been disappointed... until now! Finally, someone who gets it! Easy input by scanning the ISBN barcode (for most books), or typing in the title. Contains more information than other apps by linking to the Library of Congress. User friendly in that all data can be manipulated to meet specific requirements. Thumbnails are included and can be changed if needed. Pick lists are editable, too. Try it, you’ll like it! — Consumerpaul on CLZ Books
February 09, 2019
Going well
Excellent app for books especially with visible ISBN barcode;-) Have added 200 today. — oldhutch on CLZ Books
January 29, 2019
Einfach zu verwalten
Sehr gute App, einfach zu verwalten, Erfassung über Handy-Scan oder manuelle Eingabe der ISBN. — Dirk van Lyrop on CLZ Books
November 24, 2018
Scan and add, done!
I used to write down the ISBN's of books I wanted on my wish list. Now I just scan and add them to my wish list in seconds. Great program and phone app. — Dave Bakke on CLZ Books
October 24, 2018
Very useful
I can't remember how I came across the name now, and while I use both the books and movies/DVD ones, it's the books that's more of my interest. My system is that books I've read, and my mother also, upon their return, are put onto the Book Collector program, then stored in my garage. I print out the lists to take around with me for bookshops, sales, etc, that way I know what I've got.
I find being able to enter the exact ISBN for hardback/paperback versions very useful as I'm a librarian by trade so have used several different software programs for loans/returns. And the extra tweaks over the years have made things easier to use Collector, including the 'ISBN not recognised' so I can add those books to the collection/list. — Amanda Witt (Australia) on Book Collector
October 08, 2018
Awesome
Great app, I was in need to catalogue my books and works excellent, I can even take a picture of old books without isbn. — chuertag on CLZ Books
October 10, 2017
CLZ Books
Superb software, easy to set up and ISBN scanning via camera makes it so easy to enter my books. Wish I had found it ealier. — sgur alisdair on CLZ Books
August 05, 2017
Fun!
I am having fun using the scan feature. It took a little practice but after about 10 books I feel like a pro. My book sale purchases will be loaded in no time. Except for those pre-ISBN books of course. Although they are pretty easy too. — A Google user on CLZ Books
June 26, 2017
Easy to use, syncing works well
An easy to use database for a book collection, which extends to eBooks as well as printed books. Syncing between devices is efficient, and looking up information about books - even old books before the days of ISBN - is fast. The interface is attractive. Where available, the app adds cover images automatically - but this is not always possible with older books. Books can also be added manually. — Michael Cayley on CLZ Books
June 07, 2017
Very simple
I just scan the book barcode and it's in my list, in alphabetical order by title. It doesn't have older versions of some books whose isbns have changed since the initial publishing but you can still find the book by author and title. — Adia Grigsby on CLZ Books
March 10, 2017
Praise!
I just thought I would drop you a note to say how pleased I am with your software. I have previously fiddled around with several competitor products for maintaining a database of my book collection - including apps which run on Android devices as well as Windows. I came upon Book Collector for Windows last week, tried it, and found that it is easily the best product of its class - absolutely well worth the money you ask for it (and probably much more!).

I can genuinely say this is one of the best thought out database systems I have come across in quite a long time, and the all-important user interface is really well designed indeed. It is truly a joy to use & does everything I need. The automatic data-entry mechanisms & scope for maintaining pick lists etc are exactly what is required to facilitate the arduous task of data-entry, and the facilities for listing, displaying images, sorting, and printing are superb and very intuitive.

I found that the competitor products quite often failed on automatic lookups via ISBN (particularly those systems designed in the USA), whereas Book Collector has very rarely done so up to now- I'm amazed at how often it finds details for books I have which are 50 years old or more & don't show an ISBN (or even an SBN!).

So congratulations on a really brilliant piece of software - I would recommend it to anyone needing to catalogue their book collection. — G C Pearce (United Kingdom) on Book Collector

February 05, 2017
Where have you been all my library?
Fantastic app! More than just a "you enter it all yourself," it references a database and enters most of the information for you. Less than ten books entered and only two were not found. Both have ISBN numbers but seem to be self-published, so not expecting those to be found. Even $15 to get full use of the app is definitely worth the price if you have a large collection. Highly recommended! — The Kitchen Witch on CLZ Books
December 27, 2016
Love it
I've used other cataloging software and this is the best. Easy-to-use interface; cataloging by ISBN is simple. And love being able to access my collection from all my devices. — A Google user on CLZ Books
November 15, 2016
Handy when I'm book shopping
I use it to keep track of what books I have, so that when I shop I know if an interesting book would be a new addition to my library. I find it easy to add books by scanning ISBN bar code on back cover or inside cover, which works for almost all books. Older books (~40+ yrs) that don't have recognizable ISBN, I search by author and title then select to add (still relatively easy). In very rare cases I've added a book manually and included the front cover picture that I took myself. — C101481 on CLZ Books
November 07, 2016
Me gusta
Tras usar otro catalogador, éste me resulta más práctico, sobre todo al usarlo en paralelo mac-ipad. Me gusta mucho que la base de datos del isbn (lo que más uso) sea más amplia y de acceso más libre. Algunos aspectos pueden pulirse un poco, pero globalmente he mejorado. — Lpf64 on CLZ Books
November 05, 2016
Awesome
Awesome update Alwin! Much more user friendly...and going to your website to add the unknown ISBN was a pain. Thanks for continuing to make the program better! — Scott James (USA) on Book Collector
October 31, 2016
Book Catalogue
Just started to use this app. Scanning of Isbn is easy and the speed of response is remarkable. Lots of customisation possible so no excuse for misplacing a book. Will probably end up paying the one off fee for use with more than 100 books. — RNW61 on CLZ Books
October 25, 2016
CLZ Books
The Book Collection Database seems really great with ISBN scanning on an Iphone. — DaiCilgeraint on CLZ Books
September 30, 2016
Fantastic!
I love this application. Whether you have a book collection you want to want to catalog or just want to keep track of what you have read you can't beat it. Just scan the ISBN number and the app pulls in a ton on info on the book. You can create folders if you choose. Extremely useful. — Wilfred the Barbarian on CLZ Books
September 25, 2016
Fantastic app
This is a great app for looking after a book collection. It is quick and easy to add most books (simply scan the ISBN or type in the book title). — Specul8 on CLZ Books
September 07, 2016
So far so good
I've been looking for something I could inventory my collection for awhile now. This is the first I've found that allows me to scan via ISBN and manage my collection via app or PC. — Darrel Spurlock on CLZ Books
July 15, 2016
Couldn't have been simpler. Entire bookshelf in about 2 hours
Phone with scanning screen in one hand, pulling out book enough to scan isbn with other hand, set aside problem barcodes for later (additional stickers, hardback books), very very easy. Great app. If it had worked at the end of a selfie stick - I wouldn't have needed a ladder - lol — Eamonn Edwardo on CLZ Books
June 21, 2016
Easy to use
I have been very happy so far with this app. I especially like the scanning feature that allows me to scan the ISBN instead of having to type each number in by hand. The cost to upgrade storage is on par with other apps and websites I have checked out. — +(A-rOd)+ on CLZ Books
May 23, 2016
To the making of many books
This app is great. I've started cataloging my books. Pretty easy scanning the ISBN. They also have one for your music. Someday I may get to my CDs. — Kickin' heels on CLZ Books

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