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Hassle-free COUNTER for the price of a sushi dinner

Celusone is an online application for harvesting and analysis of COUNTER statistics. It is a powerful yet simple and affordable solution for single library users.

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Main features

Streamlined for single-library users - powerful, simple and blazing fast

All COUNTER versions

Supports both COUNTER 4 and COUNTER 5. And if version 6 comes, we will be ready for it too .

Slice & dice your data

View usage data from different angles, quickly switch between different views.


Easily find most requested items across all platforms and publication types.

Improves every month

We are listening to our users and constantly tuning-up and adding new features.

Cloud hosted - no installation, no lengthy on-boarding - just register and start adding your SUSHI credentials. Celus will take care of the rest.

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In action

Play with your data

All data in one place with powerful visualizations

Celus was originally tailor made for the Czech national consortium CzechELib. Its design was driven by real-world usage and tested on humans :) It offers many different views of your data to satisfy even the most demanding data geek.

Detailed data

Celus helps you get the most out of your data

Celus fetches the most granular data it can get. When fetching COUNTER 5 data, it uses the full reports only and reconstructs the different views from them. This makes it possible to construct any imaginable view of the data on the fly.

Highly interactive

Streamlined for ease of use and blazingly fast

The user interface is highly interactive - no page reloads, just smooth action. Quickly redraw charts, filter and sort titles, find what you need.

Who is behind it?

Celus was created in cooperation of the National Library of Technology of the Czech Republic and Big Dig Data s.r.o.
Celusone is a commercial service based on an open-source system created for the Czech national consortium CzechELib (CELUS = CzechELib Usage Statistics).

Comparison of CELUS versions

Celus open source

Customer size Any
Pricing Free
License Open source
Service Provided "as is"
Support Community based
Installation & updates DIY
UI customization & branding DIY or ask us
Custom functionality DIY or ask us
non-COUNTER data support Yes


Customer size Single library
Pricing Fixed monthly fee
License Proprietary
Service Self-service
Support Included
Installation & updates Cloud based, not required
UI customization & branding -
Custom functionality -
non-COUNTER data support No


Customer size Consortia
Pricing Commercial - ask us
License Proprietary
Service Full service included
Support Included
Installation & updates Included
UI customization & branding Included
Custom functionality Possible during onboarding
non-COUNTER data support Yes