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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 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

Great product for book collector. If you got books this is the best way to record them. I use it across an iPhone, iPad, MacBook, and Mac desktop. Seamless. The flexibility of the program is so great that you can record your books in a fashion that highlights what is important to you. You are not pinned down to a specific method that some geek programer in a back room who never owned a book thinks you should use to record your collections. It has flexibility.
Further and just as important or maybe more important is the customer service. I have had this product for 5-10 years and have consistently received the best customer service in the business. Every email is answered. First they understand your question and then they answer it. Other software customer service people do not understand the question, and then give you an answer from some script that the mother ship office directs them to use regardless of whether it answers the question or not. Not so here. These guys are terrific.
The best in the business. Buy the product.
— mathiasuppercove (USA) on September 28, 2019

Reviews from customers

October 14, 2019
The quality of your work
Almost every time I open Book connect, I find improvements and new features. Just want to express my appreciation, as a steady user, for the quality of your work.
Many thanks and keep it up ! — Guy Dauphinais (Canada) on Book Collector
October 14, 2019
Awesome
Awesome for keeping track of my books. — Joseph Duffy on CLZ Books
October 11, 2019
DE oplossing om mijn boekenverzameling overzichtelijk te houden
Al heel lang verzamel ik pop-up boeken..Eerst wist ik nog wel welke ik al had en welke niet, maar toen ik dubbele ging kopen maakte ik in Excel een bestandje en printte dat uit en nam dat elke keer mee....aangevuld met handgeschreven informatie. Maar toen ontdekte ik Collectorz.com, echt geweldig!!!!!!
Alle boeken staan er (bijna) en nu kan ik zelfs met mijn telefoon in de winkel zien of ik een boek al heb door het isbn te scannen. Ontzettend blij ben ik er mee , het is heel gebruiksvriendelijk en jullie support is ook snel en adequaat, als het nodig is. — Anneke Eggink (Netherlands) on Book Collector
October 08, 2019
Utterly first class
Your app and backup are utterly first class. In fact so professional I am 100% supportive even though its just my home library of 2000 ish books it is wonderful to use and explore. — Mike waterfield (USA) on Book Collector
October 07, 2019
The best
I’ve been slowly editing my CLZ Database of books. Correcting typos, retaking photos, adding my own thoughts, removing some genres and subjects.
I must say this is the best database in the market. — Paul Morrow on CLZ Books
October 07, 2019
Perfect
Perfect app, makes things so much easier! — Rob Conley on CLZ Books
October 06, 2019
Excellent
Just what I was after. — Philip Spedding on CLZ Books
October 05, 2019
I really like this app
It keeps track of the books I've read in an organized fashion. I can add my comments, rate, and date the books when I finish them. I recently had some difficulty logging into my app so I contacted Support. They were very helpful and stayed in contact with me until we worked out my problem. I highly recommend this app. — Jan Adamson on CLZ Books
October 02, 2019
Klasse
Einfach Klasse auf jedem Gerät. — Oskar Schönherr on CLZ Books
October 02, 2019
Can keep track of all my books
Also it is great that I have the list of book borrowed from the library so I do not bring away duplicates of ones I have already read. — Barbara Leonard on CLZ Books
September 28, 2019
Best product and customer service
Great product for book collector. If you got books this is the best way to record them. I use it across an iPhone, iPad, MacBook, and Mac desktop. Seamless. The flexibility of the program is so great that you can record your books in a fashion that highlights what is important to you. You are not pinned down to a specific method that some geek programer in a back room who never owned a book thinks you should use to record your collections. It has flexibility.
Further and just as important or maybe more important is the customer service. I have had this product for 5-10 years and have consistently received the best customer service in the business. Every email is answered. First they understand your question and then they answer it. Other software customer service people do not understand the question, and then give you an answer from some script that the mother ship office directs them to use regardless of whether it answers the question or not. Not so here. These guys are terrific.
The best in the business. Buy the product. — mathiasuppercove (USA) on CLZ Books
September 26, 2019
CLZ Books
Clear, easy to use interface with extensive customization options. The few times I've reached out to support they have responded quickly and effectively. — Seth Wilpan on CLZ Books
September 25, 2019
No more duplicates
Love this app to make sure I don't buy dupes. — Michael Manning on CLZ Books
September 24, 2019
Easy to use
Love it! Very easy to use! — Aaron K on CLZ Books
September 23, 2019
Highly recommended
I have been using this app for several years and it just gets better. I had a problem today which I raised with CLZ Support. Within a few minutes, I was in contact with Alwin Hoogerdijk (the head honcho of CLZ) who guided me through the steps which restored my database of over 1500 book titles in very quick time. I'm VERY grateful and recommend this app wholeheartedly! — brian reeds on CLZ Books
September 21, 2019
Essential app
Absolutely essential for keeping track of what books I have or what I want! — Dennis Griffin on CLZ Books
September 20, 2019
CLZ Books App
I love this app. I have also recommended to many people. I find most all books old and new are in the data base. I have had to manually enter the odd book. I love it as when I am on the go I can check also what books I have already. I “had” a habit if buying the same book again. IKR Crazy! I have over 1600 books and added them quickly and seamlesly. Thanks guys and gals at CLZ. — Tarahthemedi on CLZ Books
September 20, 2019
Wonderful
Great app. I love it. — Catherine Bell on CLZ Books
September 12, 2019
Spot on!
The tech response and program is spot on! — Kathy Stromer on CLZ Books
September 12, 2019
Great app, easy to use, wonderful support
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 CLZ Books
September 11, 2019
This App has awesome support!
I purchased the CLZ Book App a few months ago. I have to say that they helped me upload my collection when I was having problems with the CSV file. Their support has been so wonderful. Just recently the App started crashing on me on my phone when I tried to edit a new entry to place it in a collection. I contacted support and they got back to me before the day was out. He asked me some questions and gave me a few things to try. Before I could even try those suggestions out, I got an email saying that they had found the bug and were submitting their solution to Apple. It was so nice to know that there was a real person on the other side of the App and not an automated message. I love this app, for it’s ease of entry and also for the support. I bought the full version and am very happy with it. — Pippin414 on CLZ Books
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
September 09, 2019
Great app and excellent customer service
I have installed this app because it was the only one where I could upload my existing data; it has been a wonderful discovery, user friendly and professional at the same time. Highly recommend. Every time I ask for advice and help the customer support answer immediately and answers my questions. Good job! — MayRoses on CLZ Books
September 05, 2019
Wonderful app
Like all of the catalog tools, they offer this app is amazing. I have over 1,500 physical & digital books plus over 2,000 magazines and the app lets me track them with super fast reports and plenty of group by options. A must buy if you want to avoid buying duplicates or want to know what you have for insurance purposes or the pure joy of it. Collectorz has been keeping my collections organized for a decade now. — Yodaman70 on CLZ Books
September 04, 2019
Nette database voor boeken
Gebruik deze app zodat ik weet welke boeken ik al heb digitale en echte boeken, makkelijk invoeren met scannen van streepjescode en ook handig handmatig in te voeren, bij vragen word er snel geantwoord en hulp aangeboden, top! — pauline 1961 on CLZ Books
September 04, 2019
A great app with brilliant support
This is without doubt my favourite app. It’s visually intuitive, easy to use and enables me to sync my library across multiple devices. The support is also exceptional - I had a problem after downloading a software update which Alwin responded to promptly and efficiently. He told me the day and time the problem would be solved and it was. I’ve always recommended this app to friends and I’ll continue to do so. — Dr-PH on CLZ Books
September 03, 2019
Tracking for my favourite authors and series
Great for tracking which books, authors, series titles you’re missing in your collection. Barcode scanning allows for things to be added quickly. All the CLZ mobile apps are great for this. — riders4ever on CLZ Books
September 02, 2019
Great app
Wonderful app and great customer support. Highly recommended. — dansimmonsghost on CLZ Books
August 29, 2019
AMAZING app
I inherited about 500 books and need to catalog them. This is an AMAZING app. Questions are answered quickly. — Bill Wehrmacher on CLZ Books
August 26, 2019
A great app!
I had been looking for a book cataloging app and the ones I had seen were fine. I was hesitant to purchase this app when I came across it, thinking that maybe paying $20+ wouldn't be necessary just to have a list of books on my phone, but as I played around with the free version, it really was what I was looking for. I bought this one and the CLZ Movies and I never regretted it! It was 100% worth the money. — A Google user on CLZ Books

Read more reviews from customers