Welcome to CLZ!

CLZ is THE collection database software!

Easily catalog your comics, movies, video games, music or books.

Work on your phone or computer and sync data between them.

Reviews from CLZ users

Dec 31, 2024
So happy!
This app has saved my wife & me SO much money by keeping us from buying duplicate books that it might as well be free! Simple & easy to use - in fact simpler than ever with the new update! And when I had a minor issue with the Statistics feature, I asked for help and was promptly replied to with clear instructions that fixed my problem. As stated, so happy with this app!
Oknittanyfan (USA) on CLZ Books Mobile
Dec 25, 2024
Awesome product and awesome support!
I have been using this product over 10 years and it’s simply amazing. Even on Christmas Day when I had an issue I emailed support. They got right back to me and fixed it instantly.
Unlimit10 (USA)
Dec 24, 2024
Fantastic programs
Been using your programs for over a decade. Thank you for these fantastic programs and continued innovations.
Cameron B. (USA)
Dec 10, 2024
Great customer service
Great customer service and outstanding job fixing the IT issue! This is why I keep spreading the word about all the CLZ apps!
C.J. (USA)
Nov 28, 2024
The best customer service in the world!
You guys are the best customer service in the world! I love all your apps and of course still use Books, Movies and will soon use the LP/CDs apps as soon as I have to time start adding my music to the apps!
Roger (USA)
Nov 27, 2024
To the rescue
Many thanks for the re-set. Everything seems to be working fine now.
I must stress how much I always appreciate the speed and efficiency with which you and Sytske come to the rescue. It really does matter!
Graham (United Kingdom)
Nov 21, 2024
Enjoy this software
I enjoy this software and it really helps when I see things on sale in stores to be able to check and see if I already own it.
Alan (USA)
Nov 15, 2024
Excellent database
CLZ Music is an excellent database, but I shouldn't be surprised. I also have CLZ Movies and CLZ Books which are excellent databases for my films and books respectively. All of them get regularly saved to a cloud so if the worst happens and I can't open the CLZ version, I can go to the cloud and build another from there. If not, contact them for help which is helpful and will soon have you up and running again. I would say I have used these databases for more than 15 years now.
Karen Denmark
Nov 11, 2024
The Best Out there!
CLZ continues to produce winning apps, this one is no exception. Hands down the best way to keep organized and avoid duplicating a movie. Super easy to use to locate, add, or adjust your collection. Next up…action figures?
I’m so glad to be connected to the company and also it’s worth noting they are VERY responsive to the collecting community…they truly care!
Russ1850 (USA)
Nov 7, 2024
My libraries organized
Thanks for making such programs, they really help keep music, movies and book libraries organized.
Errol Hunt (USA)
Oct 24, 2024
Amazing
Really appreciate your amazing customer service.
Maryann C. (United Kingdom)

Latest CLZ news


Let’s kick off 2025 with two of Marvel Comic’s biggest stars, Deadpool and Wolverine! They are back again, ready to annoy each other, fight evil forces and save the universe while they’re at it. Be sure to check #1 of the brand new series Deadpool / Wolverine.

In #’1 of DC Comics’ Justice League: The Atom Project, we follow the exciting adventures of the two Atoms, Ray Palmer and Ryan Choi. Be sure to keep your ion this thrilling new mini-series!

And traditionally the beginning of a new year is the perfect time to ask yourself essential questions. So if you ever wondered What If…? Galactus Transformed Hulk; you can find out now in #1 of this Marvel Comics one-shot!

Happy Reading, and have a great 2025!

Read more


CLZ Alwin here, with the last CLZ Newsletter for 2024.
But first: A happy 2025 from the entire CLZ Team: Martin, Rowdy, Sven, AJ, Pim, Joe, Bernard, Justin, Taco, Kelvin, Sytske and me, Alwin!

Then next up: I have some BIG news:

CLZ is going fully remote per Jan 1!

Yep, today is our last day at the office! Starting Jan 1, CLZ will go fully remote, fully virtual. No more office, no more CLZ HQ. We will all work from home!

During the Covid period, we already worked from home for almost 2 years. During that period, we became pretty efficient in communicating over Slack, meeting using Google Meet, working together using screen sharing, etc…
Post Covid, we never went back to the office in full, most of the team kept working from home 3 days a week, and 2 days at the office. And like many other companies, we are finding that this hybrid situation is far from ideal… and quite costly.

While some companies are attempting a full BTO approach (back to office), we have decided to go the other route: we are going fully remote!
This will give us all more flexibility to work from anywhere, at any time. Lower costs and no more lengthy commutes. And unlike the Covid period, we can still meet IRL whenever we need or want. We are planning to do “social meetings” for lunch or dinner twice a month, and project-based meetings on demand.

We are super excited for this new officeless era!

With that out of the way, here’s the other CLZ News for December 2024:

  • Mobile apps:
    • CLZ Comics 10.0: Add Comics by scanning the covers
    • CLZ Comics 10.1: Check Comic Values by scanning covers
  • Web apps:
    • CLZ Web: Improved Add screens for all 5 Web flavors
    • Coming up: CLZ Web UI refresh
  • CLZ Core updates:
    • Core for Movies: “Check Covers” project, 86% cloud coverage!
    • Core for Comics: New Comic Book Day summary, 2,027 new releases

Read more

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CLZ Comics Mobile

NCBD: Most wanted comics for week 1

Dec 30, 2024

New Year, New Comics! Get ready for the most anticipated releases of the first week of 2025. These top-10s are created by you all, the users of the CLZ app and software, as they’re based on how often these comics already appear on your wish lists in the CLZ Cloud, even before release!

Read more

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CLZ Comics Mobile

CLZ Comics – Wrap-Up 2024

Dec 29, 2024

The year is almost over, but not before we take a look back at this year’s biggest hits!

We have done some queries on our Core online comic database to gather popularity stats, based on usage of the CLZ comic database app and software. Using the results of those queries, we created these fantastic Top 10 Comics of 2024 lists!

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Here it is, the final NCBD of the year. And it’s a small one, only 311 releases.

Let’s start strong with two total Marvel badasses! We join Bishop and Cable on a time-travellng adventure in Marvel Comics’ brand new series Timeslide.

In DC Comics’ Action Comics, Vol. 3 #1081 we witness the final battle between the heroes of Earth and Aethyr’s enemy forces. This looks like a job for Superman and his family!

And last but not least we dive into #6 of Hello Darkness, published by Boom! Studios. This holiday season issue offers plenty of creepy Christmas stories, created by amazing artists like James Tynion IV, Garth Ennis and John Arcudi!

Happy Reading!

Read more

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CLZ Comics Mobile

NCBD: Most wanted comics for week 52

Dec 23, 2024

These top-10s are created by you all, the users of the CLZ app and software, as they’re based on how often these comics already appear on your wish lists in the CLZ Cloud, even before release!

Read more


Fixed in the Add Comics screen:

  • Add Comics: NCBD tab: Tapping “View all issues” for a series didn’t work
  • Missing Comics: “Open in Add Comics” link didn’t go to the right tab
  • iOS only: Add Comics: The bottom area with the Add button was acting strange sometimes

Wishing you all a Merry New Comic Book Day and a Happy New Pull List!

This week we start with the Christmas-themed issue 12 of Ultimate Spider-Man, Vol. 2. Even though the Christmas season is upon them, it looks like dark clouds are gathering above the Parker family.

In issue 1 of New Gods, Vol. 5 we learn that an old god passed away, which sets up many dangerous and chaotic events. Be sure to check out Ram V and Evan Cagle’s take on this epic series.

And last but not least we received a RSVP from a galaxy far, far away. Let’s travel to the beautiful world of Eriadu, where lovers Lula Talisola and Zeen Mrala are going to tie the wedding knot any time soon. Go read Star Wars: The High Republic Phase III – The Wedding Spectacular and see you at the wedding reception!

Happy Reading!

Read more

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CLZ Games Web

Improved Add Games screen

Dec 17, 2024

Today, a big update for your CLZ Games Web software.

For this update, we have done a complete re-design of the Add Games screen. The 3 main goals here were to: 


  1. Make it easier to find the actual game and release you own, when adding by Title
  2. Make the search results more compact and nicer looking
  3. Make it all fast and snappy

Read more

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CLZ Movies Web

Improved Add Movies screen

Dec 17, 2024

Today, a big update for your CLZ Movies Web software.

For this update, we have done a complete re-design of the Add Movies screen. The 3 main goals here were to:

  1. Make it easier to find the actual movie and release you own, when adding by Title
  2. Make the search results more compact and nicer looking
  3. Make it all fast and snappy

Read more